Chapter Six

Question 0

A chemical transmitter substance released by certain nerve endings

Answer 0

Acetylcholine

Question 1

To move away from the midline of the body

Answer 1

Abduction

Question 2

A contractile protein of muscle

Answer 2

Actin

Question 3

An electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell, allowing sodium ions to move into the cell and reverse polarity

Answer 3

Action Potential

Question 4

To move toward e midline of the body

Answer 4

Adduction

Question 5

Requiring oxygen to live and grow

Answer 5

Aerobic Respiration

Question 6

Not requiring oxygen

Answer 6

Anaerobic Respiration

Question 7

Muscles that act in opposition to an agonist or prime mover

Answer 7

Antagonists

Question 8

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

Answer 8

Aponeuroses

Question 9

Unique high-energy molecule found in muscle fibers but not other cell types.

Answer 9

Creatine Phosphate

Question 10

Up and down movement that includes lifting the the foot so that its superior surface approaches the shin (standing on your heels)

Answer 10

Dorsiflexion

Question 11

Movement that increases the angle of a joint. Ex: straightening a flexed knee

Answer 11

Extension

Question 12

Muscles acting to immobilize a joint or a bone; fixes the origin of a muscle so that muscle action can be exerted at the insertion.

Answer 12

Fixators

Question 13

Bending; the movement that decreases the angle between bones.

Answer 13

Flexion

Question 14

The movable attachment of a muscle as opposed to its origin.

Answer 14

Insertion

Question 15

The product of anaerobic metabolism, especially in muscle

Answer 15

Lactic Acid

Question 16

A motor neuron and all the muscle cells it supplies

Answer 16

Motor Unit

Question 17

Contractile organelles found in the cytoplasm of muscle cells

Answer 17

Myofibrils

Question 18

One of the principal contractile proteins found in muscle

Answer 18

Myosin

Question 19

The region where a motor neuron comes into close contact with a skeletal muscle cell.

Answer 19

Neuromuscular Junction

Question 20

Chemical released by neurons that may, upon binding to receptors of neurons or effector cells, stimulate or inhibit them.

Answer 20

Neurotransmitter

Question 21

Attachment of a muscle that remains relatively fixed during muscular contraction.

Answer 21

Origin

Question 22

Pertaining to the sole of the foot

Answer 22

Plantar Flexion

Question 23

Muscle whose contractions are primarily responsible for a particular movement; agonist

Answer 23

Prime Mover

Question 24

The inward rotation of the forearm causing the radius to cross diagonally over the ulna—palms face posteriorly

Answer 24

Pronation

Question 25

The outward rotation of the forearm causing palms to face anteriorly

Answer 25

Supination

Question 26

The fluid-filled space at a synapse between neurons

Answer 26

Synaptic Cleft

Question 27

Muscles cooperating with another muscle or muscle group to produce a desired movement

Answer 27

Synergists

Question 28

For of dense fibrous tissue attaching a muscle to a bone

Answer 28

Tendons