Muscles Unit

Question 1

What is myology?

Answer 1

Study of structure, arrangement, and action of muscles

Question 2

Four characteristics of a muscle: contractility

Answer 2

The ability to shorten and thicken with force (flexing)

Question 3

Four characteristics of a muscle: excitability

Answer 3

The ability to respond to stimuli

Question 4

Four characteristics of a muscle: extensibility

Answer 4

The ability to stretch beyond its original length

Question 5

Four characteristics of a muscle: elasticity

Answer 5

The ability to return to original length

Question 6

What are six functions of a muscle?

Answer 6

Movement, stability, posture, protection, heat, and circulation

Question 7

Movement

Answer 7

Muscle contraction bones of a skeletal system to produce voluntary and involuntary movement

Question 8

Stability

Answer 8

Muscles work alongside tendons and ligaments to stabilize joints during movement

Question 9

Posture

Answer 9

Muscles help keep the body in the correct position while sitting standing or moving

Question 10

Protection

Answer 10

Muscles provided protective covering for internal organs and absorb shock

Question 11

Heat

Answer 11

Muscle contraction generate 55% of body heat

Question 12

Circulation

Answer 12

Muscles allow for the movement of substances through ducks and vessels of other organ systems

Question 13

What are the three different types of muscle groups?

Answer 13

Skeletal, smooth and cardiac

Question 14

Skeletal

Answer 14

Attaches to bones, responsible for body movement, voluntary, fast

Question 15

Smooth

Answer 15

Found in walls of hollow organs, responsible for moving substances in body, involuntary, slow

Question 16

Cardiac

Answer 16

Found in walls of heart, contracting heart to pump, blood, involuntary, medium, dark striations.

Question 17

Flexion pairs with

Answer 17

Extension

Question 18

Abduction pairs with

Answer 18

Adduction

Question 19

Lateral rotation pairs with

Answer 19

Medial rotation

Question 20

Pronation pairs with

Answer 20

Supination

Question 21

Eversion pairs with

Answer 21

Inversion

Question 22

Protraction pairs with

Answer 22

Retraction

Question 23

Elevation pairs with

Answer 23

Depression

Question 24

Dorsiflexion pairs with

Answer 24

Plantar Flextion

Question 25

Two other movements that don’t have pairings

Answer 25

Hyperextension and circumduction

Question 26

What is Origin?

Answer 26

Attachment to a stable bone that does not move during muscle contraction. Ex: biceps origin attaches to head of humerus

Question 27

What is Insertion?

Answer 27

Attachment to a mobile bone that moves during muscle contraction. Ex: Biceps insertion attaches to radius.

Question 28

What is Agonist?

Answer 28

The muscle that provides the force to a moving bone by contracting. Ex: Biceps contract during arm flexion (prime mover).

Question 29

What is Antagonist?

Answer 29

The muscle that acts in opposition to the agonist by relaxing. Ex: Triceps relax when arm flexion.

Question 30

Biceps Brachii pairs with

Answer 30

Triceps Brachii

Question 31

Hamstrings pairs with

Answer 31

Quadriceps

Question 32

Flexor Digitorum pairs with

Answer 32

Extensor Digitorum

Question 33

Gastrocnemius pairs with

Answer 33

Tibialis anterior