Ch 10 Skeletal Muscle System

Question 1

Axial muscles

Answer 1

Support and position axial skeleton

Question 2

Appendicular Muscles

Answer 2

Support and move the limbs

Question 3

Tendons

Answer 3

Attaches muscles to bone

Dense regular collagen connective tissue

Question 4

Origin

Answer 4

Immobile site muscle does not move

Question 5

Insertion

Answer 5

Mobile moves the muscle

Question 6

Agonist (or Prime Mover) Muscle

Answer 6

Muscle whose contraction is responsible for producing a particular movement

Question 7

Antagonist Muscle

Answer 7

Muscle that opposes agonist

Question 8

Temporalis muscle (o: Temporal bone; i: Mandible bone)

Answer 8

Chewing muscle

Question 9

Eye Muscles

Answer 9

6 muscles move each eye

2 Oblique, 4 Rectus Muscles

Question 10

Superior Rectus

Answer 10

moves eye to look superiorly

Question 11

Inferior Rectus

Answer 11

moves eye to look inferiorly

Question 12

Lateral Rectus

Answer 12

moves eye to look laterally

Question 13

Medial Rectus

Answer 13

moves eye to look medially

Question 14

Superior Oblique

Answer 14

rolls eye to look inferiorly and laterally

Question 15

Inferior Oblique

Answer 15

rolls eye to look superiorly and laterally

Question 16

Muscles of Thorax

Answer 16

Intercostal m and Diaphragm m – for respiration.

Question 17

Muscles of the abdominal wall

Answer 17

Rectus abdominis m - flexes vertebral column.

Question 18

Postural Muscles of the back

Answer 18

Erector spinae m – extends the vertebral column. Includes:
Iliocostalis (Lateral) m
Longissimus (Middle) m
Spinalis (Medial) m

Question 19

Diaphragm

Answer 19

Separates abdomen from thorax region

Question 20

Intercostal Muscles

Answer 20

Intercostal muscles are between ribs
o: rib above
i: rib directly below

Question 21

Rectus Abdominis

Answer 21

abs

Question 22

Erector Spina Muscle Group

Answer 22

Iliocostalis (Lateral) m
Longissimus (Middle) m
Spinalis (Medial) m

Question 23

lliocostalis

Answer 23

Lateral M

Question 24

Longissimus

Answer 24

Middle M

Question 25

Spinalis

Answer 25

Medial M

Question 26

Arm Muscles

Answer 26

i: Humerus bone (these muscles move the arm) Deltoid m (o:clavicle & scapula): It abducts arm Pectoralis major m (o:clavicle & sternum): It flexes the arm

Question 27

Deltoid

Answer 27

Deltoid m (o:clavicle & scapula): It abducts arm

Question 28

Pectoral's Major

Answer 28

Pectoralis major m (o:clavicle & sternum): It flexes the arm

Question 29

Forearm

Answer 29

O: scapula; i: humerus, radius & ulna bones Biceps brachii muscle: Flexes the forearm Triceps brachii muscle: Extends the forearm

Question 30

biceps brachii muscle

Answer 30

Biceps brachii muscle: Flexes the forearm

Question 31

Triceps brachii muscle

Answer 31

Triceps brachii muscle: Extends the forearm

Question 32

Wrist and hand

Answer 32

O:bones of forearm; i: carpal & metacarpal Flexor muscles – located anteriorly Extensor muscles – located posteriorly

Question 33

Flexor muscles

Answer 33

Flexor muscles – located anteriorly

Question 34

Extensor muscles

Answer 34

Extensor muscles – located posteriorly

Question 35

lliopsoas

Answer 35

Iliopsoas muscle: o: vertebral & coxal bone; function - prime flexor of the thigh.

Question 36

Gluteus maximus

Answer 36

Gluteus maximus: o: coxal bone; function - prime extensor of thigh.

Question 37

Ankle and Foot muscles

Question 38

Anterior Tibialis Muscle

Answer 38

Anterior Tibialis muscle – located anteriorly; o:Tibia bone; i:tarsal and metatarsal bones. It dorsiflexes foot

Question 39

Gastrocnemius muscle

Answer 39

Gastrocnemius muscle – located posteriorly; o:femur; i: tarsal bone. It plantarflexes foot

Question 40

Orbicularis Oculi Muscle

Answer 40

Orbicularis oculi – closes eye tightly

Question 41

Orbicularis Oris Muscle

Answer 41

Orbicularis oris – purse lips

Question 42

Zygomaticus Makor/Minor muscle

Answer 42

Zygomaticus muscle – retracts & elevate corner of mouth

Question 43

Temporalis Muscle

Answer 43

Temporalis muscle (o: Temporal bone; i: Mandible bone)

Question 44

Sternocleidomastoid muscle

Answer 44

Sternocleidomastoid muscle (o:sternum & clavicle bones; i:Mastoid process)