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locate the external structures of the following vertebrates: SHARK head/trunk/ta

ID: 41388 • Letter: L

Question

locate the external structures of the following vertebrates:

SHARK

head/trunk/tail ________

mouth/teeth/jaw ________

external nares ________

spiracles ________

external gill slits ________      

endolymphatic pores ________

dorsal fins, pectoral fins, pelvic fins ________

clasper (males) ________

cloacal aperture ________

caudal fin ________

placoid scales _______

FROG

head/trunk ________

nictitating membrane ________

external nares ________

mouth/teeth/jaw ________

tympanic membrane (tympanum) ________

forelimbs/hindlimbs ________

cloacal aperture ________

RAT

head/neck/trunk/tail ________

mouth/jaw/teeth ________

pinnae ________

external nares (nostrils) ________

nictitating membrane (conjunctiva) ________

mammary glands (nipples) __________

scrotum (male) ________

vagina (female) ________

anus ________

forelimb/hindlimb/claws ________

hair, tail ________

Choose between...

For rat:

cranial

caudal

rostral

dorsal

ventral

medial

lateral

proximal

distal

superficial

deep

superior

inferior

For the frog:

rostral

cranial/anterior

caudal/posterior

dorsal

ventral

midline

median

medial

lateral

proximal

distal

superficial

deep

For the shark:

rostral

cranial/anterior

caudal/posterior

dorsal

ventral

midline

medial

lateral

proximal

distal

superficial

deep

Explanation / Answer

answer---

SHARK

mouth/teeth/jaw ____HEAD

external nares ________HEAD

spiracles ________ HEAD

external gill slits ________ HEAD   

endolymphatic pores ________ TRUNK

dorsal fins, pectoral fins, pelvic fins ________TRUNK

clasper (males) ________TAIL

cloacal aperture ________TAIL

caudal fin ________TAIL

placoid scales _______ TAIL

FROG

nictitating membrane ________HEAD

external nares ________HEAD

mouth/teeth/jaw ________ HEAD

tympanic membrane (tympanum) ________HEAD

forelimbs/hindlimbs ________TRUNK

cloacal aperture ________ TRUNK

RAT

mouth/jaw/teeth ________HEAD

pinnae ________HEAD

external nares (nostrils) ________HEAD

nictitating membrane (conjunctiva) ________HEAD

mammary glands (nipples) __________TRUNK

scrotum (male) ________TAIL

vagina (female) ________TAIL

anus ________TAIL

forelimb/hindlimb/claws ________TRUNK

hair, tail ________TAIL