Shark: external and digestive

Question 1

anterior

Answer 1

towards the head

Question 2

posterior

Answer 2

towards the tail

Question 3

left

Answer 3

the specimen’s left

Question 4

right

Answer 4

the specimen’s right

Question 5

cross section

Answer 5

divides animal from anterior and posterior portions

Question 6

dorsal

Answer 6

to the sky

Question 7

ventral

Answer 7

the stomach, towards the ground

Question 8

longitudinal

Answer 8

a cut along the anterior and posterior axis

Question 9

transverse

Answer 9

same as cross section, a cut from the left to the right

Question 10

palpate

Answer 10

to feel

Question 11

function of notochord of cephalochordate

Answer 11

its a flexible rod in a fluid in tough sheath that moves laterally for the creature to move

Question 12

function of neural tube of cephalochordate

Answer 12

it gives rise to the CNS and is form in embryo

Question 13

oral (buccal cavity) of cephalochordate

Answer 13

both food and water come through there

Question 14

pharynx of cephalochordate

Answer 14

food gets stuck in the mucus of the pharynx

Question 15

gill slits of cephalochordate

Answer 15

where water flows out of pharynx

Question 16

cecum of cephalochordate

Answer 16

acts as the liver and pancreas

Question 17

myomeres of cephalochordate

Answer 17

the v shaped muscles that help move

Question 18

gonads of cephalochordate

Answer 18

the eggs are fertilized externally

Question 19

labial pocket of shark

Answer 19

allows the shark mouth to extend and retract

Question 20

spiracle of shark

Answer 20

water rushes in to the gill slits

Question 21

endolymphatic pores of shark

Answer 21

2 holes side by side by eyes equilibrium and hearing

Question 22

ampullae of lorenzini

Answer 22

electroreception

Question 23

external nares of shark

Answer 23

odour detction

Question 24

what’s the difference between the smooth dogfish and the sharpnose

Answer 24

dogfish has
- spiracle
- gill rakers

Question 25

what is the sharpnose name

Answer 25

Rhizoprionodon terraenovae

Question 26

what is the smooth dogfish name

Answer 26

Mustelus canis

Question 27

what is the path of a fertilized egg in sharks

Answer 27

urinary papilla to uterus

Question 28

what is the path of food in sharks

Question 29

what is the path of sperm in sharks

Answer 29

anterior of kidneys, seminal vesicle, to testes to urogenital papilla out cloaca

Question 30

what is the path of eggs in sharks

Answer 30

ovaries, osmium tubae, oviduct, urinary papilla

Question 31

what is the path of urine in sharks

Answer 31

posterior part of kidney (males), urinary duct to urogenital papilla

Question 32

lateral line

Answer 32

holds a sensory system for sharks for them to be able to feel vibrations due to pressure changes, connected to the endolympatic pores and ampullae of lorenzini

Question 33

pectoral fins

Answer 33

steering and lift

Question 34

dorsal fins

Answer 34

keep them from rolling, keep in straight line

Question 35

denticles/ placoid scales

Answer 35

embedded in skin like a tooth, reduce drag of water because they are so uniformly placed

Question 36

pelvic fins

Answer 36

balance and stabilization

Question 37

claspers

Answer 37

only on the smooth dogfish

Question 38

cloaca

Answer 38

where the digestive, reproductive and urinary tract exits the body

Question 39

what is the rostrum

Answer 39

take in water so it flows over the gills

Question 40

visceral arches

Answer 40

there are 7 of them and they turn into the mandibular arch, hyoid arch and the 5 branchial

Question 41

mandular arch

Answer 41

actual cartilage of jaw

Question 42

hyoid arch

Answer 42

supporter of jaw

Question 43

gill arches

Answer 43

support the interbranchial septa

Question 44

small intestine

Answer 44

has a spiral to keep food going an churning the food

Question 45

colon

Answer 45

water absorbtion

Question 46

rectal gland (digitiform)

Answer 46

for salt excretion

Question 47

rectum

Answer 47

where waste is held to be excetered

Question 48

bile duct

Answer 48

send bile form gallbladder to duodenum

Question 49

pancreas

Answer 49

digestive enzymes into duodenum

Question 50

spleen

Answer 50

production and storage of red blood cells

Question 51

liver

Answer 51

detox and oil keeps sharks a float

Question 52

gall bladder

Answer 52

creates and secretes bile

Question 53

kidney of males

Answer 53

anterior parts helps with sperm transport, posterior is for excretion

Question 54

kidney of females

Answer 54

only for excretion

Question 55

urogenital papilla

Answer 55

the term for male sharks, where the urinary ducts open posterior to the anus in the cloaca

Question 56

urogenital pore

Answer 56

where water exits in males

Question 57

archinephric ducts

Answer 57

sperm travel from testes though these to the urogenital papilla

Question 58

urinary papilla

Answer 58

the term for female sharks, where the urinary ducts open posterior to the anus in the cloaca

Question 59

urinary pore

Answer 59

where water exits in females

Question 60

testes

Answer 60

is the sperm sac

Question 61

seminal vesicle

Answer 61

makes fluid for sperm to be mobile

Question 62

siphon

Answer 62

adds fluid to the seminal fluid, located in the groove of the claspers

Question 63

left ovary

Answer 63

behind stomach and makes the eggs

Question 64

urteus

Answer 64

where fertilized pup develops, slightly anterior to cloaca

Question 65

oviducts

Answer 65

bridget from ovary to uterus

Question 66

ostium tubae

Answer 66

opening of the oviduct