Lab Quiz 2

Question 1

Deep shoulders: what is the function and homology (in shark) of rhomboideus?

Answer 1

adducts scapulla medially; hypaxial musculature

Question 2

Deep shoulders: what is the function and homology (in shark) of rhomboideus capitis?

Answer 2

protract and rotate scapula cranially; hypaxial musculature

Question 3

Deep shoulders: what is the function and homology (in shark) of splenius?

Answer 3

elevate and rotate the head laterally; epaxial musculature

Question 4

Deep shoulders: what is the function and homology (in shark) of levator scapulae ventralis?

Answer 4

protracts scapula cranially; hypaxial

Question 5

Deep shoulders: what is the function and homology (in shark) of supraspinatus?

Answer 5

protracts humerus cranially; pf add

Question 6

Deep shoulders: what is the function and homology (in shark) of infraspinatus?

Answer 6

abducts and rotates humerus laterally; pf add

Question 7

Deep shoulders: what is the function and homology (in shark) of teres major?

Answer 7

retracts humerus and rotates it medially; pf abd

Question 8

Deep shoulders: what is the function and homology (in shark) of teres minor?

Answer 8

assists in lateral rotation of humerus; pf abd

Question 9

Deep shoulders: what is the function and homology (in shark) of serratus dorsalis?

Answer 9

cranial portion protracts ribs cranially and caudal portion retracts ribs caudally; hypaxial musculature

Question 10

deep back: what is the function and homology (in shark) of mutifidus spinae?

Answer 10

extended vertebral column and bend it laterally; expaxial musculature

Question 11

deep back: what is the function and homology (in shark) of longissimus dorsi?

Answer 11

extends vertebral column; epaxial

Question 12

deep back: what is the function and homology (in shark) of intercostalis externus?

Answer 12

protracts ribs cranially; hypaxial

Question 13

deep back: what is the function and homology (in shark) of intercostalis internus?

Answer 13

retracts ribs caudally; hypaxial

Question 14

deep abdomen: what is the function and homology (in shark) of internal oblique?

Answer 14

compress the abdominal region; hypaxial

Question 15

deep abdomen: what is the function and homology (in shark) of transversus abdominus?

Answer 15

compresses the abdominal region; hypaxial

Question 16

deep upper forelimb: what is the function and homology (in shark) of triceps brachii?

Answer 16

extends the forelimb at the elbow joint; pf abd

Question 17

deep upper forelimb: what is the function and homology (in shark) of brachialis?

Answer 17

flexes the forelimb at the elbow joint along with biceps brachii; pf add

Question 18

deep upper forelimb: what is the function and homology (in shark) of anconeus?

Answer 18

assists triceps to extend forelimb at the elbow joint; pf abd

Question 19

head and neck: what is the function and homology (in shark) of masseter?

Answer 19

elevation of the lower jaw; adductor mandibulae

Question 20

head and neck: what is the function and homology (in shark) of digrastic?

Answer 20

depression of the lower jaw; intermandibularis

Question 21

head and neck: what is the function and homology (in shark) of sternomastoid?

Answer 21

bilateral actions flex the head ventrally, unilateral actions turn head sideways; cucullaris

Question 22

head and neck: what is the function and homology (in shark) of cleidomastoid?

Answer 22

turns the head sideways when clavicle is stationary, protracts the clavicle cranially when head is stationary; cucullaris

Question 23

head and neck: what is the function and homology (in shark) of sternohyoid?

Answer 23

retraction of the hyoid; coracohyoid

Question 24

head and neck: what is the function and homology (in shark) of sternothyroid?

Answer 24

retraction of the larynx; coracohyoid

Question 25

head and neck: what is the function and homology (in shark) of mylohyoid?

Answer 25

elevation of the oral floor; intermandibularis

Question 26

head and neck: what is the function and homology (in shark) of cricothyroid?

Answer 26

tensing of the vocal cords

Question 27

shark: what is the function of intermandibularis?

Answer 27

elevation of the oral floor

Question 28

shark: what is the function of ventral superficial constrictors?

Answer 28

compression of the gill pouches for ventilation

Question 29

shark: what is the function of coracoarcuals?

Answer 29

assisting in the depression of the lower jaw

Question 30

shark: what is the function of coracohyoid?

Answer 30

assisting in the depression of the lower jaw

Question 31

shark: what is the function of coracomandibularis?

Answer 31

depression of the lower jaw

Question 32

shark: what is the function of coracobranchials?

Answer 32

depression of the lower jaw

Question 33

shark: what is the function of the pectoral fin adductor?

Answer 33

lower the pectoral fin

Question 34

shark: what is the function of myomere?

Answer 34

individual muscle blocks

Question 35

shark: what is the function of myoseptum?

Answer 35

soft connective tissue between myomeres

Question 36

shark: what is the function of epaxial muscle?

Answer 36

flexion of the trunk and caudal region

Question 37

shark: what is the function of hypaxial muscle

Answer 37

flexion of the trunk and caudal region

Question 38

shark: what is the function of levator palatoquadrate

Answer 38

elevation of the palatoquadrate

Question 39

shark: what is the function of spiracularis

Answer 39

elevation of the palatoquadrate

Question 40

shark: what is the function of adductor mandibulae

Answer 40

elevation of the meckel’s cartilage

Question 41

shark: what is the function of the second dorsal constrictor/epihyoideus?

Answer 41

compression of the gill pouches for ventilation

Question 42

shark: what is the function of the dorsal superficial constrictors?

Answer 42

compression of gill pouches for ventilation

Question 43

shark: what is the function of the cucullaris?

Answer 43

elevation of the suprascapular cartilage