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Biology
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18 Dec 2019

1.Which muscle group is composed of mainly slow-twitch (type I)fibers?

a. Small muscles of the hand
b. Erector spinae muscles of theback
c. Deltoid muscle of theshoulder

d. Rectus muscles that move the eye

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Patrina Schowalter
Patrina SchowalterLv2
31 Dec 2019
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Related questions

1) Muscle tone is the result of:

a) asynchronous firing of motorunits

b) incomplete tetanus.

c) multiple muscle twitches.
d) multiple motor unit summation.

2) Under normal circumstances, at the level of single skeletalmuscle fibers, there are:

a) all-or-nonr responeses

b) graded contractions, depending onstimulus input

c) rapid spasmodic contractions, resulting in themain contraction

3) The muscles of the eye need to make precise small motormovements. Therefore, you would find large motor units in the eye,while you would find small motor units in postural muscle such asthe thigh.

a) True

b) False

Multiple Choice Part 2

H. Which of the following muscles doesn’t belong to the rotator cuff group?

a. Infraspinatus

b. Subscapularis

c. Supraspinatus

d. Teres major

e. Teres minor

I. Which of the following muscles protracts and stabilizes the scapula?

a. Deltoid

b. Latissimus dorsi

c. Serratus anterior

d. Rhomboids

e. Trapezius

J. Which of the following muscles allows you to shrug your shoulders?

a. Deltoid

b. Sternocleidomastoid

c. Pectoralis major

d. Supraspinatus

e. Trapezius

K. Which of the following muscles aids the latissimus dorsi in the extension and adduction of the humerus?

a. Infraspinatus

b. Subscapularis

c. Supraspinatus

d. Teres major

e. Teres minor

L. Which of the following rotator cuff muscles medially rotates the humerus?

a. Infraspinatus

b. Subscapularis

c. Supraspinatus

d. Teres minor

M. The following all insert on the greater tubercle of humerus except the:

a. Teres minor

b. Subscapularis

c. Supraspinatus

d. Infraspinatus

N. In doing push-ups, which are the two major muscles involved?

a. Biceps brachii

b. Triceps brachii

c. Latissimus dorsi

d. Pectoralis major

e. Trapezius

O. In doing chin-ups, which of the following major muscles is involved?

a. Trapezius

b. Triceps brachii

c. Latissimus dorsi

d. Pectoralis major

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(a) our intercostal muscles contract and our ribs move down
(b) our diaphragm muscles contract and the ribs move up
(c) our diaphragm muscles contract and the ribs move down
(d) our intercostal muscles contract and the diagram muscles relax

Q2) In what TWO ways will the composition of blood coming from the pulmonary artery differ from that going to the pulmonary vein?

Q3) which of the terms (i)vital capacity (ii) Residual air, could reasonably apply to each of the volumes given below?
(a) 500 cm³
(b) 5000 cm³
(c) 1000 cm³

Q4 state four characteristics of an efficient respiratory surface.

Q5 which of the following diseases are UNLIKELY to be caused by smoking:
a) Lung cancer
b) tuberculosis
c) bronchitis
d) colds
e) heart attacks

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