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Bisc 316 > Shark: external and digestive > Flashcards

Shark: external and digestive Flashcards

1
Q

anterior

A

towards the head

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2
Q

posterior

A

towards the tail

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3
Q

left

A

the specimen’s left

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4
Q

right

A

the specimen’s right

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5
Q

cross section

A

divides animal from anterior and posterior portions

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6
Q

dorsal

A

to the sky

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7
Q

ventral

A

the stomach, towards the ground

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8
Q

longitudinal

A

a cut along the anterior and posterior axis

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9
Q

transverse

A

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

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10
Q

palpate

A

to feel

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11
Q

function of notochord of cephalochordate

A

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

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12
Q

function of neural tube of cephalochordate

A

it gives rise to the CNS and is form in embryo

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13
Q

oral (buccal cavity) of cephalochordate

A

both food and water come through there

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14
Q

pharynx of cephalochordate

A

food gets stuck in the mucus of the pharynx

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15
Q

gill slits of cephalochordate

A

where water flows out of pharynx

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16
Q

cecum of cephalochordate

A

acts as the liver and pancreas

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17
Q

myomeres of cephalochordate

A

the v shaped muscles that help move

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18
Q

gonads of cephalochordate

A

the eggs are fertilized externally

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19
Q

labial pocket of shark

A

allows the shark mouth to extend and retract

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20
Q

spiracle of shark

A

water rushes in to the gill slits

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21
Q

endolymphatic pores of shark

A

2 holes side by side by eyes equilibrium and hearing

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22
Q

ampullae of lorenzini

A

electroreception

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23
Q

external nares of shark

A

odour detction

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24
Q

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

A

dogfish has
- spiracle
- gill rakers

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25
Q

what is the sharpnose name

A

Rhizoprionodon terraenovae

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26
Q

what is the smooth dogfish name

A

Mustelus canis

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27
Q

what is the path of a fertilized egg in sharks

A

urinary papilla to uterus

28
Q

what is the path of food in sharks

A
29
Q

what is the path of sperm in sharks

A

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

30
Q

what is the path of eggs in sharks

A

ovaries, osmium tubae, oviduct, urinary papilla

31
Q

what is the path of urine in sharks

A

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

32
Q

lateral line

A

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

33
Q

pectoral fins

A

steering and lift

34
Q

dorsal fins

A

keep them from rolling, keep in straight line

35
Q

denticles/ placoid scales

A

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

36
Q

pelvic fins

A

balance and stabilization

37
Q

claspers

A

only on the smooth dogfish

38
Q

cloaca

A

where the digestive, reproductive and urinary tract exits the body

39
Q

what is the rostrum

A

take in water so it flows over the gills

40
Q

visceral arches

A

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

41
Q

mandular arch

A

actual cartilage of jaw

42
Q

hyoid arch

A

supporter of jaw

43
Q

gill arches

A

support the interbranchial septa

44
Q

small intestine

A

has a spiral to keep food going an churning the food

45
Q

colon

A

water absorbtion

46
Q

rectal gland (digitiform)

A

for salt excretion

47
Q

rectum

A

where waste is held to be excetered

48
Q

bile duct

A

send bile form gallbladder to duodenum

49
Q

pancreas

A

digestive enzymes into duodenum

50
Q

spleen

A

production and storage of red blood cells

51
Q

liver

A

detox and oil keeps sharks a float

52
Q

gall bladder

A

creates and secretes bile

53
Q

kidney of males

A

anterior parts helps with sperm transport, posterior is for excretion

54
Q

kidney of females

A

only for excretion

55
Q

urogenital papilla

A

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

56
Q

urogenital pore

A

where water exits in males

57
Q

archinephric ducts

A

sperm travel from testes though these to the urogenital papilla

58
Q

urinary papilla

A

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

59
Q

urinary pore

A

where water exits in females

60
Q

testes

A

is the sperm sac

61
Q

seminal vesicle

A

makes fluid for sperm to be mobile

62
Q

siphon

A

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

63
Q

left ovary

A

behind stomach and makes the eggs

64
Q

urteus

A

where fertilized pup develops, slightly anterior to cloaca

65
Q

oviducts

A

bridget from ovary to uterus

66
Q

ostium tubae

A

opening of the oviduct

Bisc 316 (17 decks)

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