Necturus section 4 and 6

Question 1

how are mudpuppy teeth like fish teeth

Answer 1

small, conical, and homodont

Question 2

what are the teeth sets on the upper jaw

Answer 2

premaxillary V, and vomerine with pterygoid set

Question 3

what are the teeth sets on the lower jaw

Answer 3

dentary teeth with small sets of splenial teeth at the ends

Question 4

the tongue is supported by what arch

Answer 4

hyoid arch supports the tongue

Question 5

what is the function of gill rakers

Answer 5

short projections on either side of the gills that prevent large particles from passing over the gills

Question 6

where does the glottis open into

Answer 6

pharynx to glottis to larynx

Question 7

what does the glottis cover

Answer 7

esophageal opening

Question 8

where does the esophagus extend from

Answer 8

esophageal opening in pharynx to the stomach

Question 9

why is the epithelium lining the inside of the esophagus cilliated

Answer 9

for peristalsis

Question 10

where is the stomach terminated

Answer 10

at the pylorus

Question 11

where is the duodenum located

Answer 11

anterior part of the small intestine

Question 12

what does the duodenum receive

Answer 12

openings of bile and pancreas ducts

Question 13

what does the ileum resemble

Answer 13

loosely coiled tube

Question 14

where does the ileum extend from

Answer 14

duodenum to rectum

Question 15

where does the rectum end

Answer 15

ends with the cloaca

Question 16

what is another name for the rectum

Answer 16

large intestine

Question 17

what is the function of the liver

Answer 17

detoxifies, secretes some chemicals

Question 18

what is the gall bladder

Answer 18

beginning of the bile duct

Question 19

where is the pancreas located

Answer 19

along the length of the duodenum (whitish organ)

Question 20

what organ of the digestive gland has no digestive function

Answer 20

spleen

Question 21

what are the digestive glands

Answer 21

liver, gall bladder, pancreas, spleen

Question 22

what are the digestive organs

Answer 22

esophagus, stomach, duodenum, ileum

Question 23

what is another name for body cavity

Answer 23

coelom

Question 24

what does the transverse septum divide the body into

Answer 24

pericardial cavity and pleuroperitoneal cavity

Question 25

what does the pericardial cavity contain

Answer 25

heart

Question 26

what does the pleuroperitoneal cavity contain

Answer 26

everything except the heart

Question 27

what is the gastrospelnic ligament

Answer 27

between stomach and spleen

Question 28

what is the faciliform ligament

Answer 28

liver and ventral body wall

Question 29

what is the hepatogastric ligament

Answer 29

stomach and liver

Question 30

what is the hepatoduodenal ligament

Answer 30

liver and duodenum

Question 31

a male deposits a ____ that is then picked up by the female

Answer 31

spermatophore

Question 32

what is a spermatophore

Answer 32

clusters of sperm enveloped by a gelatinous substance

Question 33

what are the two theories on how the female picks up the spermatophore

Answer 33

direct physical contact, spermatophore in river and female uses muscular movement of cloaca (no copulation or amplexus)

Question 34

what is the spermatheca

Answer 34

in the cloaca, serves as a receptacle for spermatozoa

Question 35

when do neturus eggs happen

Answer 35

female receives sperm in fall, eggs laid in the following spring

Question 36

where are the eggs kept once laid

Answer 36

in a hollowed out space in sand under log or rock

Question 37

up to how many individual eggs can be deposited

Answer 37

150

Question 38

why does the female remain in the nest

Answer 38

to guard the eggs with brooding behavior

Question 39

why does adult necturus remain in nest after eggs hatched

Answer 39

why leave a shelter thats already established

Question 40

how long does it take for eggs to hatch

Answer 40

6-9 weeks

Question 41

how long does it take baby to mature to adult

Answer 41

up to 8 years

Question 42

whats the life span of mud puppy

Answer 42

25 years

Question 43

where are the testes located

Answer 43

on each side of the mid dorsal line above the kidneys

Question 44

what is the mesorchium

Answer 44

(male) messentry that attaches testes to the dorsal surface

Question 45

where are the efferent ductules located

Answer 45

along the mesorchium from the testes to the kidneys containing sperm

Question 46

what is the function of the slender parts of the kidneys in males

Answer 46

genital in function (tubules in this region modified for sperm passage)

Question 47

what are the mesonephric ducts in males

Answer 47

on lateral border of kidneys, convey sperm and urine

Question 48

what is the cloaca in males

Answer 48

terminal sinus of digestive, reproductive, and excretory systems, with papillae

Question 49

why is the bladder so important in males during breeding season

Answer 49

has small glands that open into the cloaca to hep remove the spermatophore

Question 50

where are the ovaries located on the female

Answer 50

cover anterior of the kidneys with masses of ova

Question 51

what is the female mesovarium

Answer 51

messentries that suspend ovaries from mid dorsal wall

Question 52

what are the oviducts

Answer 52

large coiled ducts lateral to each kidney and ovary, expands to form uterus

Question 53

what is the ostium

Answer 53

funnel shaped opening of the oviduct

Question 54

where do the uteri open to

Answer 54

open into the sides of the cloaca

Question 55

what are the mesotubarium

Answer 55

mesentry that attaches each oviduct to mid-dorsal body wall

Question 56

what does female cloaca lack that male cloaca has

Answer 56

papillae