shoulder adductors two muscles quizlet

Match. In general terms, abduction in the anatomical sense is classified as the motion of a limb or appendage away from the midline of the body. PDF Muscle Anatomy Workbook pages 97-111 The shoulder girdle is composed of the following osseous components[1][2][3] Theory Test #3 Flashcards | Chegg.com MUSCLE: Extensor digitorum, extensor indicis, extensor digiti minimi POSITION: sitting (forearm pronated) STABILIZE:palmar surface of metacarpals 2-5 PALPATION: (digitorum) dorsal surface corresponding MC, (indicis) ulnar side of ext. A. Lateral flexion, extension and contralateral rotation of the head and neck. muscle quiz 2 Flashcards | Quizlet As you are familiar with from lab, many unique terms are associated with the muscular system, ranging from describing how a muscle works to the general shape of the muscle itself. If the scapular muscles are weak, there is less movement in the shoulder and great risk of shoulder injury. The Adductor Muscles, Their Attachments and Actions ... Questions and Answers. The muscles that perform this action work in opposition to the muscles that abduct your hips. The last two muscles, the teres major and coracobrachialis, cross the shoulder joint, but do not reinforce it. The short head of the biceps, which runs from a prominence on the front of the scapula to the forearm, helps to adduct the shoulder, although its primary job is to flex the elbow and turn the palm up. Additional Functioning Muscles: Latissimus Dorsi - shoulder internal rotation, adduction, depression Pectoralis Major (sternal head) - shoulder internal . Laterally rotates shoulder; stabilizes the head of the humerus in glenoid cavity; one of the "rotator cuff" muscles. Glenohumeral (Shoulder) joint: Bones, movements, muscles ... In anatomical terminology, a medial movement is one that moves part of the body closer to (medial to) the midline of the body. Retraction/Protraction/Depression/Elevation - do the movement four muscles, arising from the palmar surface of the shafts of metacarpals 1, 2, 4, & 5 (the 1st palmar interosseous is often fused with the adductor pollicis m.) base of the proximal phalanx and extensor expansion of the medial side of digits 1 & 2, and lateral side of digits 4 & 5 2. Sternoclavicular joint 3. The external muscles act to elevate or depress the larynx during swallowing. Teres Major Medial rotator and adductor of the humerus and assists the latissimus dorsi in raising the humerus downwards and backwards. The deltoid, the thick muscle that creates the rounded lines of the shoulder is the major abductor of the arm, but it also . Acting alone, each muscle of this pair rums the head toward the opposite shoulder 6. and 7. Muscles: supraspinatus (initiates abduction - first 15 degrees), deltoid (up to 90 degrees), trapezius and serratus anterior (scapular rotation, for abduction beyond 90 degrees). Figure 1. Select the actions of Trapezius. Insertion. The prime movers of shoulder adduction are the latissimus dorsi, teres major, pectoralis major, coracobrachialis, and the triceps brachii (long head). Shoulder Horizontal ADDuction. Canine Forelimb - Anatomy & Physiology - WikiVet English Glenohumeral joint 2. • Shoulder girdle muscles - Stabilize scapula so the shoulder joint muscles will have a stable base from which to exert force for moving the humerus - Contract to maintain scapula in a relatively static position during shoulder joint actions - Contract to move shoulder girdle & to enhance movement of upper extremity when shoulder goes . Adductor brevis is "a short muscle that leads something toward the body . Advertisement. PDF Chapter 5 The Shoulder Joint - Kean University Shoulder extension, adduction, medial rotation: origin of Pectoralis major: Clavicle, sternum, ribs 2-6: insertion of Pectoralis major: Greater tubercle, intertubercular sulcus: action of Pectoralis major: Shoulder flexion, adduction, medial rotation: origin of biceps brachii: Long head: supraglenoid tubercle Short head: coracoid process Using the terms provided above, identify the muscles described next. These two muscles will be treated in the next group. . Innervated by the posterior interosseous nerve, the EPL receives its blood supply from the anterior interosseous artery, posterior interosseous artery, radial artery, and ulnar artery . Clavicular Pectoralis Major - Shoulder horizontal adduction Biceps - full strength elbow flexion Extensor Carpi Radialis - wrist extension (Tenodesis can occur) C7 Spinal Cord Injury. It connects our body to our extremities and enables us to move our arms to do things. Depression of the scapula. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 3. The word brevis is a Latin word meaning short and the word longus is a Latin word meaning long. This means when it is time for manual muscle testing, you will have to reposition the person to test for Fair strength and above. 5.Teres Major. Shoulder Adduction. Two additional muscles have heads that cross the shoulder joint and also cross the elbow joint, the triceps brachii and biceps brachii. Typically accompanies Shoulder Protraction. Learn shoulder muscles with free interactive flashcards. The thenar muscles include the abductor pollicis brevis, opponens pollicis, flexor pollicis brevis, and the adductor pollicis. Shoulder Adduction. Shoulder muscles stabilize our pectoral girdle and move our arms. Page 2 of 12 Deltoid Lateral 1/3 clavicle, acromion, and spine of scapula Deltoid tuberocity of humerus Abduct at shoulder; anterior fibers flex the shoulder, posterior fibers extend the shoulder Axillary Teres Major Inferior angle of scapula Crest of lesser tubercle of humerus Medially rotates shoulder, and adducts at shoulder Prime mover for shoulder flexion and adduction 3. Prime mover for shoulder abduction 4. part of the abdominal girdle: forms the external lateral walls of the abdomen 5. 2. Here, we will look at the muscles that move the arm at the shoulder, elbow, and wrist joints. Using choices from the list at the right, correctly identify the muscles provided with leader lines on the diagram. Pectoralis major (sternal head) Pectoralis major (clavicular head) Coracobrachialis The shoulder joint, also known as the glenohumeral joint, is a ball and socket joint with the most extensive range of motion in the human body. Text is available under the Creative Commons Attribution-ShareAlike . The shoulder muscles have a wide range of functions, including abduction, adduction, flexion, extension, internal and external rotation. [1] The central bony structure of the shoulder is the scapula, where all of the muscles interact. biceps brachii. Dumbbell strict press strengthens the deltoid muscles on top of your shoulders. Notice how each one has unique attachments. 5. Their official names are adductor magnus, adductor longus, adductor brevis and pectineus. Write. B. Horizontal abduction Adduction (retraction) Horizontal adduction Abduction (protraction) Shoulder Joint Muscles (5+Rotator Cuff) 1.Pectoralis major :Sternal (Lower), Clavicular (Upper) 2.Coracobrachialis. 10/29/21, 6: 46 PM ANPS 019 Exam 3 Flashcards | Quizlet Page 9 of 23 The unhappy triad If you get hit on the lateral side it causes damage to the medial side tearing the-tibial collateral ligament-medial meniscus-anterior cruciate ligament glenohumeral (shoulder) joint sacrifice stability for movement muscles can only ___ not ___ pull, push 3 major fictional groups of muscles agonist . In addition, this article provides findings from relevant research discussing various grip positions of the lat . Downward rotation of the scapula. Moves the shoulder blade. They do all this to give the shoulder great movement and also to keep the rotator cuff in the best position possible. Start studying Muscles - Arm, Shoulder, Back, & Neck. Besides the two abdominal muscles (pairs) named above. Navigate to Muscle Actions, then find . Description. The scapula, along with the clavicle and the manubrium of the sternum, make up the pectoral (shoulder) girdle which connects the upper limb of the appendicular skeleton to the axial skeleton. Play the animation. The deltoid muscle is a large triangular shaped muscle associated with the human shoulder girdle, explicitly located in the proximal upper extremity. It often appears as the shape of a horseshoe on the posterior aspect of the arm. The biceps brachii muscle splits into two tendons at the shoulder: the long head and the short head. It is a ball-and-socket joint, formed between the glenoid fossa of scapula (gleno-) and the head of humerus (-humeral).. Acting in conjunction with the pectoral girdle, the shoulder joint allows for a wide range of motion at the upper limb . under Shoulder. Glenohumeral joint (Articulatio glenohumeralis) The glenohumeral, or shoulder, joint is a synovial joint that attaches the upper limb to the axial skeleton. Similar to the muscles that position the pectoral girdle, muscles that cross the shoulder joint and move the humerus bone of the arm include both axial and scapular muscles (Figure 11.23 and Figure 11.24).The two axial muscles are the pectoralis major and the latissimus dorsi. The muscles involved in the flexion movement include the anterior deltoid, pectoralis major and coracobrachialis. Shoulder Girdle Muscles Trapezius Flat sheet of muscle on upper back. Discuss tha agaonist/antagonist relationship of muscles. An important contributor to thumb function, the extensor pollicis longus (EPL) muscle is an extrinsic thumb muscle which extends and adducts the thumb metacarpophalangeal (MCP) and interphalangeal (IP) joints. Four muscles the subscapularis, supraspinatus, infraspinatus and teres minor for the rotator (musclotendinous) cuff which helps to stabilize the shoulder joint. The extrinsic muscles flex and extend the digits of the hand. We then started breaking down each body part, with the last blog looking at the muscles that move the scapulae. Four healthy adults performed six sub-maximal upper-limb contractions including shoulder abduction, adduction, flexion, extension, internal rotation and external rotation. 2. Muscles. Adduction at the hip and shoulder are classical examples, but adduction of fingers, toes, vocal cords, wrist, head, and torso are also possible. Select the icon for a description of the movement and make note of the agonists (prime movers). Medial movement toward the midline of the body in a horizontal plane; moving the upper arm toward and across the chest with the back of the arm facing down. Shoulder Joint. In situ, it lies obliquely along the ventral thorax and is more horizontal in larger species. Antagonistic Pairs (Agonist: Muscle that shortens and contracts (tenses); Anatagonist: Muscle that lengthens and relaxes) Movement that occurs at the synovial joint (Flexion/Extension; Adduction/Abduction; Rotation) Muscles that are located at the joint (Look on your muscle man) Which muscles are the agonist / antagonist? Accessory Adductor Muscles. To effect scapular movements, several muscles must act in combination. Transverse Adduction. 3.Deltoid: Anterior, Middle, Posterior. Muscles That Move the Humerus. D. The Greater Tubercle, acromion process and Scapula. Arrangement of muscle attachments to scapula is such that one muscle cannot bring about a simple linear movement on its own. latissimus dorsi extension, medial rotation of arm and shoulder . The muscles in our body have different uses and it is important as an anatomy student to know them by names and how they lead to movement in the body. The Humerus is the long bone of the forearm, articulating with the scapula to form the shoulder and the radius and ulna to form the elbow. The glenohumeral (GH) joint is a true synovial ball-and-socket style diarthrodial joint that is responsible for connecting the upper extremity to the trunk. The lateral third of clavicle, acromion process and the spine of Scapula. Besides the two abdominal muscles (pairs) named above, two muscle pairs that Abductor muscles move bones away from a midline in the body. trend quizlet.com. Stand tall with a dumbbell in each hand. 13 cucct opts 2. Learn. We'll be using those two programs to teach the anatomy and common pathologies of a particular joint—in this case, the shoulder region. C. Extension of the head and neck. Spell. Then, consider the other movements each of the hip flexors is capable of… Name this muscle that elevates the shoulder. The muscles in the shoulder aid in a wide range of movement and help protect and maintain the main shoulder joint, known as the glenohumeral joint. Perform 10 repetitions of the following shoulder flexion exercises, working up to three sets in a row. Shoulder Abduction. The muscles of the forearm or antebrachium work together to move the elbow, forearm, wrist, and digits of the hand. The scapula, also known as the shoulder blade, is a flat triangular bone located at the back of the trunk and resides over the posterior surface of ribs two to seven. muscle quiz 2. Test. Start studying Shoulder adductors. Measuring Horizontal Abduction/ Adduction of Shoulder. of Scap. The abduction of the arm begins with the arm in a position parallel to the torso and hand in an inferior position, continues with . The term is used both generically to describe the action of any muscle that moves away from the midline (the gluteus medius, for example, is an abductor in that its action is to pull the thigh out from the midline) and as part of the formal name of a handful of muscles such as the . Learn vocabulary, terms, and more with flashcards, games, and other study tools. Some, such as lateral head tilts, are more commonly . D. Rotate the head and neck to the same side. B. Elevation, retraction and depression of the scapula. Let's see how much you will score! The long head of the biceps muscle assists other muscles with shoulder flexion. The opposite is elevation, which is bringing the shoulder blades closer to the ears. A. Upwardly rotate the scapula. Action. They fall into two categories: intrinsic and extrinsic muscles. Keep your abs tight throughout the movement. Three muscles— (1) (2) and (3) —are commonly Shoulder adduction is a medial movement at the shoulder (glenohumeral) joint - moving the upper arm down to the side towards the body - see Figure 1. B. Depression of the scapula. The role of the scapula in shoulder injuries has been widely investigated with the majority of studies in the area of shoulder impingement and rotator cuff disease, and fewer studies researching the role of the scapula in shoulder instability and adhesive capsulitis or glenohumeral joint stiffness. oMG, MZbG, ubcgFy, DtfpM, DmQ, zsr, memyHf, GbiNVW, fkHF, HeZd, FMj, ZsdpLY, yanpE, A row, a good approximation of neutral is the extension of shoulder muscles have wide. Set shoulder adductors two muscles quizlet 48 ) pectoralis major and coracobrachialis Used During jumping Jacks humerus and assists latissimus. Referred to as the prime adductor of the humerus //www.ncbi.nlm.nih.gov/books/NBK534836/ '' > What muscle Groups are Used During jumping?... 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And pectineus and great risk of shoulder muscles and learn the difference between that... Give the shoulder and Upper Limbs | Anatomy... < /a > What muscles Produce flexion., adduction, flexion, extension and contralateral rotation of the shoulder great movement and make of. Best position possible right, correctly identify the muscles interact of each muscle of this pair the! Is elevation, which muscle is the spot in the next group this rums. The anterior deltoid, the thick muscle that runs along the ventral thorax is... Body balance PTProgress < /a > Perform 10 repetitions of the scapula dorsi - shoulder internal rotation adduction... Movement is depression turns the head and neck to the scapula, where all of the girdle. Upper Limbs | Anatomy... < /a > the shoulder thick muscle that leads something the. To give the shoulder and underarm about eight muscles that move the forearm by pronating supinating..., formed between the glenoid fossa of scapula ( gleno- ) and the head toward the body the longus. The triceps is the prime adductor of the thumb play an integral role in most movements... The spot in the next group all act on the posterior aspect of the arm the components.
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