Chapter 6- Muscular System

Question 0

Myosin

Answer 0

Bundled molecules of protein

Question 1

Aponeuroses

Answer 1

Fibrous or membranous sheet connecting a muscle and the part it moves.

Question 2

Actin

Answer 2

A contractile protein

Question 3

Motor Unit

Answer 3

One neuron and all the skeletal muscle cells it stimulates.

Question 4

Neuromuscular junction

Answer 4

Contain vesicles filled with a chemical in an axon terminal

Question 5

Neurotransmitter

Answer 5

A chemical that Fills neuromuscular junction

Question 6

Acetylcholine

Answer 6

A neurotransmitter that stimulates skeletal muscle

Question 7

Synaptic cleft

Answer 7

The gap between nerve endings and muscle cells that is filled with tissue fluid.

Question 8

Action potential

Answer 8

Conducts the electrical impulse from one End of the cell to the other.

Question 9

Creative phosphate

Answer 9

Found in muscle fibers but not in other cell types.

Question 10

Aerobic respiration

Answer 10

Occurs in mitochondria and involves a series of metabolic pathways that use oxygen.

Question 11

Lactic acid

Answer 11

Purification acid generated during glycosis and converted

Question 12

Anaerobic glycosis

Answer 12

When oxygen is low and lactic acid is produced.

Question 13

Oxygen deficit

Answer 13

Not enough oxygen and occurs during prolonged muscle activity.

Question 14

Origin

Answer 14

Attached to immovable bone

Question 15

Insertion

Answer 15

Attached to movable bone.

Question 16

Extension

Answer 16

Increases angle between two bones

Question 17

Flexion

Answer 17

Decreases angle, bringing two bones closer together

Question 18

Abduction

Answer 18

Moving a limb away from the midline.

Question 19

Addiction

Answer 19

Movement of limb toward the midline.

Question 20

Dor sickening

Answer 20

Lifting it foot so it’s superior surface approaches the skin.

Question 21

Plantar flexing

Answer 21

Depressing the foot.

Question 22

Supination

Answer 22

The Palm faces anteriorly

Question 23

Pronation

Answer 23

Palms face posteriorly.

Question 24

Prime mover

Answer 24

Muscle that has the major responsibility for causing a particular movement

Question 25

Antagonists

Answer 25

Muscles that oppose or reverse a movement

Question 26

Synergists

Answer 26

Help prime movers by producing same movement

Question 27

Fixators

Answer 27

Specialized synergists

Question 28

Tendons

Answer 28

Attach muscles indirectly to bones.