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1

True or false. The characteristics of the musculoskeletal system of each species reflect its ancestry and selective forces in the environment.
A)True
B)False
2

Mosquitoes and other insects have a(n) _____________ of chitin.
A)hydrostatic skeleton
B)endoskeleton
C)exoskeleton
D)None of these is correct.
3

Which of the following is a function of the musculoskeletal system?
A)locomotion
B)support and protection
C)house blood-forming tissue
D)mineral storage
E)All of these are correct.
4

What structure is part of the appendicular skeleton?
A)ribs
B)sternum
C)skull
D)collarbone
5

There are ___________ pairs of ribs attached to the thoracic vertebrae in the normal human.
A)2
B)10
C)12
D)14
6

___________ fibers in cartilage provide elasticity.
A)Elastin
B)Collagen
C)Keratin
7

True or false. One square inch of bone can bear a load of approximately 19,000 pounds
A)True
B)False
8

Name the spaces in bone matrix that house osteocytes.
A)osteonic canals
B)elastin
C)canaliculi
D)lacunae
9

The weight of a long bone is reduced by ____________.
A)spongy bone
B)compact bone
C)marrow cavity
D)Both a and c are correct.
E)All of these are correct.
10

True or false. Invertebrates primarily use smooth muscle.
A)True
B)False
11

Involuntary, one nucleus per cell, and intercalated disks describe ____________.
A)cartilage
B)smooth muscle
C)cardiac muscle
D)skeletal muscle
12

Muscle is attached to bone by _________.
A)smooth muscles
B)cartilage
C)ligaments
D)tendons
13

What defines the boundaries of a sarcomere?
A)A band
B)H band
C)I band
D)Z lines
14

The protein(s) _____________ control muscle contraction.
A)dystrophin
B)troponin
C)tropomyosin
D)Both b and c are correct.
15

Energy is stored in muscles in the form of ___________.
A)ATP
B)ADP
C)creatine phosphate
D)myoglobin
16

Sprinters have an abundance of what type of muscle fibers?
A)fast twitch - fatigable
B)fast twitch – fatigue resistant
C)slow twitch – fatigue resistant
D)slow twitch - fatigable
17

A synovial joint contains lubricating synovial fluid produced where in the joint?
A)bursae
B)cartilage
C)synovial membrane
D)joint capsule
18

A muscle’s _________ is the end attached to the immovable bone.
A)insertion
B)origin
C)tendon
D)belly
19

True or false. Exercise-induced increase in muscle mass is termed hypotrophy
A)True
B)False
20

True or false. Many cells and organisms have movement mechanisms based on actin and myosin.
A)True
B)False





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