Exam 3- functions of muscular system Flashcards Preview

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Flashcards in Exam 3- functions of muscular system Deck (15):
1

Muscle fibers have

contractility and extensibility

2

Origin

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

3

Insertion

the points of attachment that does move when the muscle contracts

4

Movement

Muscle fibers and contract and expand.

5

Movement affected by

type of fiber and arrangement

6

Type of fiber

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

7

Arrangement of fiber

parallel
convergent
pennate

8

Posture and balance

muscles exert a continuous pull against the strain of gravity

9

Agonist

Muscles that directly perform a movement (prime mover)

10

Antagonist

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

11

Synergists

Facilitate the agonist (helps out)

12

Fixators

(type of synergist) joint stabilizers

13

Temp Regulation

By the production of heat
response to cold
ex: shivering

14

Muscle functions:

Movement, posture and balance, temperature regulation

15

muscle fibers

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