Exam 3- functions of muscular system

Question 1

Muscle fibers have

Answer 1

contractility and extensibility

Question 2

Origin

Answer 2

the point of attachment that does not move when the muscle contracts

Question 3

Insertion

Answer 3

the points of attachment that does move when the muscle contracts

Question 4

Movement

Answer 4

Muscle fibers and contract and expand.

Question 5

Movement affected by

Answer 5

type of fiber and arrangement

Question 6

Type of fiber

Answer 6

skeletal (voluntary)
Cardiac (involuntary)
Smooth (involuntary)

Question 7

Arrangement of fiber

Answer 7

parallel
convergent
pennate

Question 8

Posture and balance

Answer 8

muscles exert a continuous pull against the strain of gravity

Question 9

Agonist

Answer 9

Muscles that directly perform a movement (prime mover)

Question 10

Antagonist

Answer 10

Muscles that directly oppose the prime mover (extend while the agonist contracts)

Question 11

Synergists

Answer 11

Facilitate the agonist (helps out)

Question 12

Fixators

Answer 12

(type of synergist) joint stabilizers

Question 13

Temp Regulation

Answer 13

By the production of heat
response to cold
ex: shivering

Question 14

Muscle functions:

Answer 14

Movement, posture and balance, temperature regulation

Question 15

muscle fibers

Answer 15

muscle cells. very long like a filament, many mitochondria and several nuclei