Lalboratory Manual for Saledin. Anatomy& Paysiolgy The Uniy f form and EXERCISE
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Lalboratory Manual for Saledin. Anatomy& Paysiolgy The Uniy f form and EXERCISE REVIEW SECTION 12 Introduction to the Study of Muscles and Muscles of the Upper Extremity Name Date_ Lab Section Review Questions 1. Ia human muscles a. What is the action of the deltoid muscle? b. Name the origin of the supraspinatus muscle. e. What is the insertion of the trapezius mascle? d. Does the biceps brachii muscle originate or insert on the humerus? e. What is the insertion of the pectoralis minor? 2. In cat muscles: a. What is the action of the epitrochlearis? b. Circle the muscle that does not correspond to a human mascle: biceps brachi, brachialis, xiphihumeralis latissimus dorsi. How does the deltoid of the cat differ from the deltoid of the human? c. 3. Match each term on the left with a description on the right 1. action 2. dissect 3. fixing 4. flexion 5. reflect 6 transect a. what a muscle does b. to cut a muscle in half c to stabilize a joint d. to separate muscles e. to decrease a joint angle t to pull back a muscle What muscles are antagonists of the triceps brachia? 5. What is the origin of the trapezius? 6. The pectoralis major has what action? 7. What is the origin of the pectoralis minor? 8. The latissimus dorsi muscle has what action?Explanation / Answer
b. The origin of Supraspinatus muscle – Supraspinous fossa of scapula.
c. The insertion of Trapezius muscle – Anterior border of scapular spine, Acromion process, Lateral Third of Clavicle
d. Biceps brachii muscle originates – Short Head of Biceps brachii from tip of coracoid process of scapula and long head from supra glenoid tubercle of scapula and inserts at Radial tuberosity.
e. Insertion of Pectoralis mazor at Greater Tubercle and intertubercular sulcus of Humerus.
2. In cat muscle –
3. Matching –
4.Muscles that antagonizes Triceps Brachii – Biceps brachii and Brachialis.
5.Origin of Trapezius - Medial Third of superior nuchal line, External Occipital protuberance, Ligamentum nuchae, spinous processes of C7 to T12.
6.Action of Pectoralis Mazor – Adduction, Flexion and Medial Rotation of the arm, Climbing, It is also accessory Muscle of Inspiration.
7.Origin of Pectoralis minor – 3rd to 5th rib near their costal cartilages.
8.Action of Lattismus dorsi – Extension, Adduction and medial rotation of the arm at shoulder joint.
9.Insertion of Infraspinatus – At greater tubercle of humerus.
10.Insertion of subscapularis – At lesser Tuberosity of Humerus.
11.Action of Triceps brachaii – Chief Extensor of Forearm.
12.Origin of Brachialis – Distal half of Anterior surface of humerus.
13.All the muscles that flexes the arm – Brachialis, Brachioradialis and Both heads of Biceps brachaii.
14.For hitting a nail with hammer, the arm muscles used are – Triceps Brachii
15.For looking up at the ceiling, The back muscles used are – Trapezius
16.Origin of Flexor carpi ulnaris in humans – At medial Epicondyle of Humerus.
17.Antagonist to supinator muscles – Pronator teres and Pronator Quadratus muscle.
18.Insertion of Flexor digitorum superficialis in humans – Middle phalanges of fingers.
19.Insertion of Extensor carpi Ulnaris - At base of 5th Metacarpal bone.
20.More developed muscle in cat is – Flexor digitorum profundus with 5 heads of origin is more developed in cats.
21. Antagonist to Extensor policis longus and Brevis - Flexor policis longus.
22. Action of Flexor Carpi radialis muscle acts to flex and abduct the hand.
23.Muscles that extends the hand – Extensor carpi radialis longus and brevis with Extensor carpi ulnaris.
24.Muscles flexes the hand – Flexor carpi radialis and Flexor carpi Ulnaris.
25.Muscles extends the thumb – Extensor pollicis Longus and Brevis.
26.Extensor carpi muscles found on - The posterior side of the forearm.
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