Cat Muscles

Question 1

Cutaneous trunci

Answer 1

Origin: Superficial trunk fascia
Insertion: Superficial shoulder fascia and medial surface of humerus
Function: to twitch skin

Question 2

Masseter

Answer 2

Origin: Zygomatic arch
Insertion: Mandible
Function: to close jaw

Question 3

External Abdominal Oblique

Answer 3

Origin: Ribs and lumbosacral fascia
Insertion: Ventral Midline
Function: Support ab organs, flex back, participate in functions that involve straining

Question 4

Internal Abdominal Oblique

Answer 4

Origin: ilium and Lumbodorsal fascia
Insertion: Ventral Midline
Function: Support ab organs, flex back, participate in functions that involve straining

Question 5

Rectus Abdominis

Answer 5

Origin: First and second ribs
Insertion: Ventral Midline
Function: Support ab organs, flex back, participate in functions that involve straining

Question 6

Latissimus Dorsi

Answer 6

Origin: 4th-6th Lumbar vertebrae
Insertion: Humerus
Function: Flexes shoulder and propels leg caudally

Question 7

Pectorals (name the 4)

Answer 7

Pectoantebrachialis, Pectoralis Major, Pectoralis Minor, Xiphihumeralis
Origin: Sternum
Insertion: Humerus
Function: Adduct the front leg

Question 8

Deltoids (name 3)

Answer 8

Acromiodeltoid, Spinodeltoid, Clavodeltoid
Origin: Scapula
Insertion: Humerus
Function: Abduct and flex shoulder joint

Question 9

Brachialis

Answer 9

Origin: Lateral surface of humerus
Insertion: Proximal end of ulna
Function: flex forearm

Question 10

Biceps Brachii

Answer 10

Origin: Glenoid fossa of scapula
Insertion: Radial tuberosity
Function: Flex the elbow

Question 11

Triceps Brachii (3 heads)

Answer 11

Lateral head, Long head, Medial head
Origin: Humerus
Insertion: Olecranon process of ulna
Function: Extends elbow joint

Question 12

Gluteal Muscles (2)

Answer 12

Gluteus Maximus, Gluteus Medius
Origin: ilium and associated fascia
Insertion: Greater trochanter of femur
Function: extend hip joint and propel body forward by pulling leg back

Question 13

Biceps femoris

Answer 13

Origin: Ishium
Insertion: Tibia and patella
Function: extend hip joint and propel body forward by pulling leg back, flexes stifle joint (most lateral)

Question 14

Semimembranosus

Answer 14

Origin: Ishium
Insertion: Distal end of tibia
Function: extend hip joint and propel body forward by pulling leg back (most medial)

Question 15

Semitendinosus

Answer 15

Origin: Ishium
Insertion: Proximal end of tibia
Function: extend hip joint and propel body forward by pulling leg back (most caudal)

Question 16

Quadriceps femoris (name 4)

Answer 16

Rectus Femoris, Vastus Lateralis, Vastus Medialis, Vastus Intermedius (not in cat)
Origin: Inshium and proximal end of femur
Insertion: patella
Function: Extends stifle joint

Question 17

Gastrocnemius

Answer 17

Origin: Condyles of femur
Insertion: Calcaneus
Function: extends hock

Question 18

Splenius

Answer 18

Function: Extends head and neck

Question 19

Trapezius (2)

Answer 19

Acromiotrapezius, Spinotrapezius

Function: extends head and neck

Question 20

Sternohyoid

Answer 20

Function: pulls hyoid dorsally

Question 21

Sternomastoid

Answer 21

Function: turns head, depress snout

Question 22

Achilles tendon

Answer 22

Location: runs down back of leg to attach on the calcaneal tuberosity

Question 23

Diaphragm

Answer 23

Location: muscle that seperates the thorax from the abdominal cavity
Function: assist in inspiration

Question 24

External Intercostals

Answer 24

most superficial muscles between ribs

Function: assist in inspiration

Question 25

Internal Intercostals

Answer 25

Deep to the external intercostals | Function: assist in expiration

Question 26

Transversus Abdominis

Answer 26

deepest of ab muscles

Question 27

Linea Alba

Answer 27

white aponeuroses down midline of abdomen that serves as attachment site for abdominal muscles

Question 28

Suprasinatus

Answer 28

Function: extend the shoulder and stabilize the joint

Question 29

Infraspinatus

Answer 29

Function: flex the shoulder and stabilize the joint