Chapter 6 Muscle movements, names and types

Question 1

Flexion

Answer 1

Decreases angle of the joint

brings 2 bones closer together

typical of hinge joints like knee and elbow

Question 2

Extension

Answer 2

oppoosite of flexion

increases angle between bones

Question 3

rotation

Answer 3

movement of a bone around its longitudinal axis

common in ball and socket joints

(shaking head no)

Question 4

Abduction

Answer 4

movement of a limb away from the midline

Question 5

Adduction

Answer 5

movement of a limb toward the midline

Question 6

circumduction

Answer 6

scribing a cone in space

Question 7

dorsiflexion

Answer 7

lifting the foot so the superior surface approaches the shin

Question 8

plantar flexion

Answer 8

depressing the foot

pointing the toes

Question 9

inversion

Answer 9

turn sole of foot medially

Question 10

eversion

Answer 10

turn sole of foot laterally

Question 11

supination

Answer 11

forearm rotates laterally so palm faces anteriorly

Question 12

pronation

Answer 12

forearm rotates medially so palm face posteriorly

Question 13

opposition

Answer 13

move thumb to touch tips of other fingers on same hand

Question 14

rectus

Answer 14

straight

Question 15

maximus

Answer 15

largest

Question 16

temporalis

Answer 16

temporal bone

Question 17

triceps

Answer 17

three heads

Question 18

sterno

Answer 18

on the sternum

Question 19

deltoid

Answer 19

triangular

Question 20

flexor

extensor

Answer 20

flexes or extends a bone

Question 21

Facial muscles

Answer 21

Orbicularis oculi: eyelid movements

Orbicularis oris: mouth and lips

Zygomaticus

Question 22

Chewing muscles

Answer 22

Masseter

Temporalis

elevate the mandible

Question 23

Neck Muscles

Answer 23

Sternocleidomastoid

flexes the neck, rotates the head

Question 24

Anterior muscles

Answer 24

pectoralis major

Question 25

abdominal girdle muscles

Answer 25

rectus abdoninal

flexes vertebral column and compresses abdonimal contents

external abdonimal oblique

Question 26

posterior muscles

Answer 26

trapezius

latissimus dorsi

deltoid

Question 27

Upper limb muscles

Answer 27

biceps brachii: flexes elbow, supinates forearm

Brachialis

brachioradialis

Triceps brachii: elbow extension

Question 28

Lower limb muscles

Answer 28

gluteus maximus: extends thigh at hip, abducts thigh

adductor muscles

hamstring group

sartorius

quadriceps group

tibialis anterior

Question 29

hamstring group muscles

Answer 29

thigh extension and knee flexion

biceps femoris

semimembranosus

semitendinosus

Question 30

quadriceps group

Answer 30

rectus femoris: extends knee, flexes hip

Vastus lateralis: extends knee

Vastus medialis: extends knee

Vastus intermedius

Question 31

Lower leg muscles

Answer 31

Gastrocnemius: plantar flexes foot, knee

Soleus: Plantar flexion