Chapter 20 - The Muscular System Flashcards Preview

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Flashcards in Chapter 20 - The Muscular System Deck (43)
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1

Fascicles

Muscle bundle

2

Fascia

Sheath around the muscle of connective tissue

3

NMJ

Neuromuscular junction

4

Acetylcholine (ACh)

Neurotransmitter released at the synapse. Interacts with cell membranes to cause contraction.

5

Chemicals that cause contraction.

Actin and myosin

6

Tonus

State of firmness

7

Agonist

Muscle that produces movement

8

Prime mover

Main muscle if a group of muscles is used to cause movement.

9

Antagonist

Muscle that relaxes during movement.

10

Synergist

Muscle that assists a prime mover

11

Origin

The point where the muscle is attached to the stable part of the body

12

Insertion

Point where the muscle is attached to the moving part

13

Flexion

Closing the angle at a joint

14

Extension

Opening an angle at a joint

15

Abduction

Moving away from the midline of the body

16

Adduction

Moving towards the midline of the body

17

Rotation

Turning a part of the body on its own axis

18

Circumduction

Circular movement from a central point

19

Pronation

Turning downward

20

Supination

Turning upward

21

Eversion

Turning outward

22

Inversion

Turning inward

23

Dorsiflexion

Bending backward

24

Plantar flexion

Bending the sole of the foot

25

My/o

Muscle

26

Muscl/o

Muscle

27

In/o

Fiber

28

Fasci/o

Fascia

29

Ten/o, tendin/o

Tendon

30

Ton/o

Tone