A&P Lab

Question 1

Origin and insertion

Answer 1

Origin - fixed point of attachment of a muscle to bone
Insertion - movable point of attachment
Usually origin is proximal to insertion

Question 2

Abduction and adduction

Answer 2

abduction – movement away from the body’s midline

adduction – movement towards the body’s midline

Question 3

Dorsiflexion and Plantar Flexion

Answer 3

Dorsiflexion - flexion at ankle (making the foot perpendicular to the leg)
Plantar flexion - extension at ankle (making the foot align with the leg)

Question 4

Agonist

Answer 4

the prime mover

mostly responsible for producing particular movement

Question 5

Antagonist

Answer 5

opposes movement of particular agonist

Question 6

Synergist

Answer 6

Smaller muscle that assists larger agonist

Question 7

Fixator

Answer 7

Synergist that assists agonist by preventing movement at another joint

Question 8

Muscles that Move pectoral girdle

Answer 8

Serratus anterior
Subclavius
Pectoralis minor
Rhomboid major/minor
Levator Scapulae (last three are deep to the trapezius)
Trapezius

Question 9

Muscles that move the arm

Answer 9

Deltoid
Pectoralis major
Supraspinatus
Subscapularis (and teres major)
Infraspinatus (and teres minor)
Coracobrachialis
Latissimus dorsi
Teres Major (Rotator Cuff)
Teres Minor

Question 10

What are muscles involved in supination and pronation?

Answer 10

Supinator and pronator teres (originates on humerus and ulna, rotates ulna)
Pronator quadratus (orginates on ulna, assists pronator teres in opposing actions of supinator or biceps brachii)

Question 11

Muscles that move forearm

Answer 11

Biceps Brachii
Brachialis
Brachioradialis
Triceps Brachii
(Your supinators and pronators)
Supinator 
Pronator Teres
Pronator quadratus

Question 12

Muscles that move wrist, hand, and fingers

Answer 12

Flexors of wrist
Extensors of wrist
Intrinsic Muscles Of the Hand

Question 13

Subclavius

Answer 13

causes depression and protraction at pectoral girdle

Question 14

Pectoralis Minor

Answer 14

causes depression and protraction at scapula

Question 15

Trapezius

Answer 15

causes protraction at scapula

Question 16

Levator Scapulae, Trapezius

Answer 16

causes elevation at scapula

Question 17

Rhomboid Major/Minor

Answer 17

causes medial/downward Rotation of scapula

Question 18

Pectoralis major, Latissimus Dorsi, Coracobrachialis

Answer 18

causes adduction at shoulder

Question 19

Deltoid

Answer 19

causes abduction at shoulder

Question 20

Teres Major

Answer 20

causes medial rotation at shoulder

Question 21

Teres Minor

Answer 21

causes lateral rotation at shoulder

Question 22

Infraspinatous

Answer 22

causes lateral rotation of brachium at shoulder

Question 23

Subscapularis

Answer 23

causes medial rotation of brachium at shoulder

Question 24

Biceps Brachii, Brachioradialis

Answer 24

causes flexion of forearm at humeroulnar/humeroradial joint

Question 25

Triceps Brachii

Answer 25

causes extension of forearm at humerorulnar/humeroradial joint

Question 26

Supinator

Answer 26

causes supination of forearm at radiocarpal joint

Question 27

Protonator Teres, Pronator Quadratus

Answer 27

causes protonation of forearm at radiocarpal joint