46: Exotics Flashcards
Which of the following is not a characteristic of a monotreme?
a] Lays eggs
b] May have a pouch
c] Has a cloaca
d] Undescended testicles in males
e] Adult teeth lacking cusps
e] Adult teeth lacking cusps
Adult monotremes rarely have teeth.
Mice reach sexual maturity at which of the following ages?
a] 3 weeks
b] 2 months
c] 6 months
d] 9 months
e] 1 year
b] 2 months
Mice are sexually mature at 5 to 8 weeks of age and may begin intensive breeding safely when 2 months old.
A necropsy on a large snake reveals paired, lobed structures in the caudal third of the coelomic cavity. These objects are which of the following?
a] Splenic hemispheres
b] Kidneys
c] Parathyroid glands
d] Carotid bodies
e] Testes
b] Kidneys
The kidneys of snakes are paired and multilobed.
Which of the following felids cannot retract its claws?
a] Margay
b] Melanistic leopard
c] Jaguarundi
d] Cheetah
e] Ocelot
d] Cheetah
The claws of cheetahs cannot be retracted.
Reptiles have a cloaca through which feces, urinary wastes, and reproductive products are passed. The eggs or living young of female reptiles pass out of the female’s body through which of the following?
a] Urodeum
b] Urethra
c] Coprodeum
d] Vestibule
e] Proctodeum
e] Proctodeum
Eggs or living young are delivered through the proctodeum into and through the cloaca of reptiles.
The mammary glands of manatees (Trichechus manatus) are in the same location as those of which of the following?
a] Horses
b] Chimpanzees
c] Dolphins
d] Pigs
e] Elephants
e] Elephants
The mammary glands of manatees are located at the base of each pectoral limb, in the caudal axillary region, similar to those of elephants.
Concerning collection of venous blood from polar bears, which of the following statements is least accurate?
a] The cephalic veins are most accessible for blood collection.
b] When using the cephalic vein for blood collection, the hair overlying the area must be shaved.
c] The jugular veins may be used for blood collection.
d] The femoral veins may be used for blood collection.
e] Intravenous catheterization is commonly used.
b] When using the cephalic vein for blood collection, the hair overlying the area must be shaved.
There is no fat surrounding the cephalic vein in polar bears, so shaving is usually not required. Intravenous catheterization is seldom used because the animal would have to be kept anesthetized for long-term fluid infusion.
A necropsy on a large snake reveals a greenish cystic structure adjacent to the spleen and pancreas, all of which are discontinuous (separated) from the liver. This greenish structure is which of the following?
a] Adrenal gland
b] Gallbladder
c] Stomach
d] Left ovary
e] Right testis
b] Gallbladder
In snakes, the gallbladder is immediately adjacent to the pancreas and spleen.
Which of the following is not a marsupial?
a] Bandicoot
b] Thylacine
c] Wombat
d] Koala
e] Platypus
e] Platypus
The platypus is a monotreme.
Pinnipeds (seals, sea lions, walruses) are a unique group of animals. They are the most common marine mammals in captivity. Which of the following is most correct concerning determining the sex of a juvenile animal?
a] It is difficult, because in males and females the reproductive and digestive systems exit from a common cloaca.
b] It is easy, because in males only the reproductive and digestive systems exit from a common cloaca, whereas the female has two separate openings.
c] It is easy, because in females only the reproductive and digestive systems exit from a common cloaca, whereas males have two separate openings.
d] It is easy, because the external genitalia resemble those of dogs.
e] It is easy, because males have a pendulous scrotum.
c] It is easy, because in females only the reproductive and digestive systems exit from a common cloaca, whereas males have two separate openings.
The male’s anus is in the same location as the female’s cloaca, just cranioventral to the base of the tail. In addition, the male has a small penile opening a few centimeters caudal to the umbilicus.
Costovertebral flank glands are most obvious in which of the following?
a] Male hamsters
b] Female gerbils
c] Male gerbils
d] Female rabbits
e] Male chinchillas
a] Male hamsters
Costovertebral flank glands are normal structures commonly seen in hamsters and most prominent in males. They can easily be confused with lesions of moist dermatitis.
Which of the following species is a spontaneous ovulator?
a] Cat
b] Ferret
c] Meadow vole
d] Guinea pig
e] Rabbit
Guinea pig
Ovulation in the guinea pig occurs spontaneously and is not influenced by mating. In the other four species listed, ovulation is induced by mating.
Concerning the reproductive cycle of mice, which of the following statements is most accurate?
a] Mice are induced ovulators, are polyestrous, and have an 8-day estrous cycle.
b] Mice are spontaneous ovulators, are polyestrous, and have a 4- to 5-day estrous cycle.
c] Mice are induced ovulators, are monestrous, and have a 4- to 5-day estrous cycle.
d] Mice are spontaneous ovulators, are monestrous, and have a 4- to 5-day estrous cycle.
e] Mice are spontaneous ovulators, are polyestrous, and have an 8-day estrous cycle.
b] Mice are spontaneous ovulators, are polyestrous, and have a 4- to 5-day estrous cycle.
Mice are polyestrous, undergo spontaneous ovulation, and have a 4- to 5-day estrous cycle.
Concerning snake anatomy, which of the following statements is least accurate?
a] Snakes do not have movable eyelids.
b] Snakes do not have an external ear, middle-ear cavity, tympanic membrane, or Eustachian tubes.
c] The trachea of snakes has a short branch, the left bronchus, which terminates in a vestigial left lung.
d] Snakes do not have a gallbladder.
e] The heart of snakes has three chambers.
d] Snakes do not have a gallbladder.
The gallbladder is adjacent to the pancreas and spleen.
Based on digestive anatomy and physiology, rabbits are classified as which of the following?
a] Ruminants
b] Carnivores
c] Nonruminant herbivores
d] Obligate omnivores
e] Variable omnivores
c] Nonruminant herbivores
Rabbits are cecal fermenters.
