ch 8 - muscular system ch test
9. The molecule ________ supplies energy for muscle contraction.
ATP
15. ________ is a term describing movement of a body part away from the midline of the body.
abduction
5. ________ is the protein that makes up the thin myofilaments.
actin
18. Skeletal muscles can also be called: a. visceral muscles b. voluntary muscles c. cardiac muscles d. all of the above
b
16. ________ is a term used to describe the movement that is the opposite of flexion
extension
2. Cardiac muscle makes up the bulk of the tissue of the ________.
heart
3. The muscle attachment to the more movable bone is called the ________.
insertion
14. ________ is a type of muscle contraction that does not produce movement and does not allow the muscle to shorten but does increase muscle tension.
isometric
13. ________ is a type of muscle contraction that produces movement in a joint and allows the muscle to shorten.
isotonic
10. ________ is the waste product produced when the muscle must switch to an energy supplying process that does not require oxygen.
lactic acid
22.________ sartorius
muscles that move the lower extremity
23.________ gastrocnemius
muscles that move the lower extremity
27.________ gluteus maximus
muscles that move the lower extremity
30.________ rectus femoris
muscles that move the lower extremity
21.________ biceps brachii
muscles that move the upper extremity
31.________ triceps brachii
muscles that move the upper extremity
6. ________ is the protein that makes up the thick myofilaments.
myosin
4. The muscle attachment to the more stationary bone is called the ________.
origin
19. Smooth muscles can also be called: a. visceral muscles b. involuntary muscles c. nonstriated muscles d. all of the above
d
11. A single motor neuron with all the muscle fibers it innervates is called a ________.
motor unit
8. The three functions of the muscular system are ________, ________, and ________.
movement, posture, heat production
1. ________ is another name for muscle cell.
muscle fiber
20. ________ temporal muscle
muscles of the head or neck
24.________ masseter
muscles of the head or neck
28.________ sternocleidomastoid
muscles of the head or neck
26.________ external oblique
muscles of the trunk
29.________ rectus abdominis
muscles of the trunk
25.________ pectoralis major
muscles of the trunk or muscles that move the upper extremity
7. The ________ is the basic functional unit of contraction in a skeletal muscle.
sarcomere
17. ________ describes the hand position when the body is in anatomical position.
supination
12. ________ is the minimal level of stimulation required to cause a muscle fiber to contract.
threshold stimulus
