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Comparative Vertebrate Anatomy > Dogfish 2 > Flashcards

Flashcards in Dogfish 2 Deck (68):
1

shiny epithelium lining heart cavity

Parietal pericardium

2

shiny epithelium covering heart

visceral pericardium

3

tissue separating pleuroperitoneal and pericardial cavities

transverse septum

4

chambers of heart

sinus venosus, atrium, ventricle, conus arteriosus

5

receives blood from heart, specifically conus arteriosus

ventral aorta

6

blood passes through these on its way to being oxygenated at gills (5 pairs)

afferent branchial arteries

7

carries blood away from gills, 4 pairs, pass dorseromedially into dorsal aorta

efferent branchial arteries

8

on roof of pharynx, supplies most of body with blood

dorsal aorta

9

first major paired branches of dorsal aorta

subclavian artery

10

arise from efferent branchial arteries, pass anteriorly and then join hyoidean artery

paired dorsal aortae

11

branching off paired dorsal aorta just anterior to first efferent branchial artery

hyoidean artery

12

internal carotid extends anteriorly and branches into this artery at level of spiracle, artery extends into chondrocranium

stapedial artery

13

union of hyoidean and paired dorsal arteries forms

internal carotid artery

14

first branch of dorsal aorta, continues posteriorly along right side of stomach

celiac artery

15

anterior one of two arteries that arise close together at the level of the spleen

anterior mesenteric artery

16

extension of anterior mesenteric artery onto intestine

posterior mesenteric artery

17

final paired branches of dorsal aorta, at level of cloaca, pass posterolaterally dorsal to kidneys toward pelvic fins

iliac artery

18

branches of iliac artery that separate before extending into pelvic fins

femoral artery

19

large vein that lies along the anterior part of the bile duct, confluence of 3 main vessels

hepatic portal vein

20

drains each side of the head and branchial region

anterior cardinal sinus

21

each posterolateral corner of the sinus venosus leads through this short but large vessel which receives blood from many main vessels and takes blood back to heart

common cardinal vein

22

lies dorsolateral to esophagus, large space bounded by a thin walled membrane, curves toward dorsal midline

posterior cardinal sinus

23

narrowing of posterior cardinal sinus, lateral to dorsal aorta

posterior cardinal vein

24

extends anteriorly along ventrolateral body wall

lateral abdominal vein

25

passes anteriorly through hemal arches of vertebrae

caudal vein

26

bifurcation of caudal vein

renal portal vein

27

lateral outer portion of the eye modified so that it is transparent

cornea

28

outer portion of eye that is not part of cornea

sclera

29

pigmented structure visible through cornea

iris

30

circular opening at centre of iris

pupil

31

hard spherical structure inside eye ball

lens

32

pigmented tissue that attaches to lens

cilliary body

33

dark tissue internal to sclera

choroid

34

light coloured layer internal to choroid

retina

35

space housing eyeball

orbit

36

nerve passing anteroposteriorly along dorsomedial wall of orbit

superficial ophthalmic nerve

37

pass posterolaterally from anteromedial wall of orbit

dorsal and ventral oblique muscles

38

radiate towards eyeball from posteromedial wall of orbit

dorsal, medial, lateral, and ventral rectus muscles

39

provides support for eyeball

optic pedicle

40

thin whitish strand passing anteroposteriorly through orbit and adhering to medial surface of eyeball

deep ophthalmic nerve

41

thick, extending from medial wall of orbit laterally to eyeball

optic nerve

42

ventral to ventral rectus muscle, thick nerve passing anteriorly, meets anteroventral orbital wall and subdivides

infraorbital nerve

43

passes anteromedially across floor of orbit where infraorbital nerve subdivides

preorbitalis muscle

44

just ventral to deep ophthalmic nerve, passes almost immediately ventrally around ventral rectus

oculomotor nerve

45

nerve that passes to dorsal oblique muscle

trochlear nerve

46

lies on posterior wall of orbit almost directly posterior to lateral rectus muscle extending laterally

mandibular nerve

47

ducts of the ear

Anterior, posterior, and lateral semicircular ducts

48

large triangular sac like structure extends between ducts

sacculus

49

two cylindrical chambers closely associated with sacculus

anterior and posterior utriculi

50

third nerve arising from anterior medulla just behind auricles of cerebellum, innervates ear

statoacoustic nerve

51

extends dorsally from sacculus and reaches exterior of head through pores

endolymphatic duct

52

thin strand like structure extending anteriorly from the epithalamus

epiphysis

53

nerve arising from ventral surface of medulla passing anterolaterally to innervate lateral rectus muscle

abducens nerve

54

first nerve arising from anterior medulla just behind auricles of cerebellum, divides into 4 nerves at orbit

trigeminal nerve

55

arises posterior to statoacoustic nerve extending into first pharyngeal slit

glossopharyngeal nerve

56

arises from fan like rootlets just posterior to glossopharyngeal nerve

vagus nerve

57

extend laterally from spinal cord

spinal nerves

58

most anterior part of brain, paired, narrow posteriorly

olfactory bulbs

59

posterior to olfactory tracts

epithalamus

60

side of epithalamus

thalamus

61

floor of epithalamus

hypothalamus

62

cavity in left cerebral hemisphere

third ventricle

63

cavity in right cerebral hemisphere

lateral ventricle

64

paired rounded structure posterior epithalamus

optic lobes

65

partially overhangs optic lobes, looks like it has 4 lobes

cerebellum

66

project on both sides of cerebellum

auricles

67

posterior part of brain that narrows into the spinal cord

medulla oblongata

68

cavity of medulla

fourth ventricle