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TCA - AM 2 Upper Extremity muscles Payday

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Last updated about 5 years ago
9 questions
2
2
1
1
1
2
10
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3
Question 1
1.

Which muscle(s) contributes to forearm flexion?

Question 2
2.

Identify the actions of the flexor carpi ulnaris.

Question 3
3.

Identify the insertion of the muscle in the diagram below

Question 4
4.

Identify the insertion of the muscle in the diagram below

Question 5
5.

Identify the insertions(s) of the muscle in the diagram below

Question 6
6.

What are the actions of this muscle?

Question 7
7.

Draggable itemarrow_right_altCorresponding Item
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Question 8
8.

CQ: Although all the anatomical parts of muscle work together to give it it's characteristics, which of the following proteins listed below would be most associated with the characteristics of excitability?

Question 9
9.

CQ: Put in the correct order

  1. Ach released by the synaptic vesicles crosses synaptic cleft; then acetylcholinesterase breaks down Ach
  2. Tropomyosin covers binding sites, myosin no longer bound
pronation
adducts wrist
abducts wrist
anterior, distal phalynx of digits 2-5
Pronates forearm
Match the muscles of the lower extremity to the appropriate description
Teres major
O: anterior surface of ribs 3-5; I: coracoid process
Deltoids
I: upper medial border of scapula; A: elevates and adducts scapula
Rhomboid major
O: T2-T5, I: medial border of scapula
Levator scapulae
O: C7-T1, A: retracts and rotates scapula to rest position
Rhomboid minor
A: extends and adducts arm: I: intertubercle groove of humerus
Pectoralis minor
O: acromion, spine of scapula and lateral 1/3 of clavicle, A: abducts, extends and medially & laterally rotates the arm
Latissimus dorsi
O: inferior border of scapula, A: medially rotates and adducts arm
Biceps brachii
A: extends forearm, I: olecranon process
Triceps brachii
O: supraglenoid tubercle of scapula & coracoid process of the scapula, I: posterior border of bicipital/radial tuberosity of radius
Pronator Teres
I: lateral shaft/convexity of radius, A: pronates and flexes forearm
Sliding action of actin over myosin (Sliding Filament Theory)
Myosin heads combine with actin-binding sites
Calcium binds to troponin, shifting tropomyosin to unblock actin-binding sites
Calcium is actively pumped back to SR
With ATP present, ATPase splits ATP to ADP + P + Energy
Motor nerve impulses (AP) to the neuromuscular junction
Calcium ions released from SR and binds with troponin
Impulse stops, calcium or ATP depleted, calcium ions return to SR
Sodium ions enter the muscle fiber, initiating an action potential that travels down the T-tubules to the Terminal Cisternae