Animal Physiology

Question 1

Locomotion

Answer 1

Movement from place to place

Question 2

Ectotherm

Answer 2

Heated from outside

Ex: reptiles

Question 3

Endotherm (Homeotherm)

Answer 3

Maintaining constant body temperature despite fluctuation in environmental temperature
Ex: birds & mammals

Question 4

Excretion

Answer 4

The removal of metabolic wastes - water, carbon dioxide, nitrogenous wastes d

Question 5

Animals

Answer 5

Multicellular eukaryotes

Heterotrophs

Question 6

Sessile

Answer 6

Nonmoving

Question 7

Exoskeleton

Arthropods

Answer 7

Consists mostly of chitin

Does not grow with the animal & must be shed periodically

Question 8

Hydrostatic Skeleton
(nematodes, planaria, annelids)

Answer 8

A closed body compartment filled with fluid

Muscle change the shape of this compartment, enabling the animal to move from place to place

Question 9

Endoskeleton

Chordates

Answer 9

Made of bone & cartilage that grows as the animal grows

Question 10

Ligaments

Answer 10

Connect bones to each other at joints

Question 11

Tendons

Answer 11

Connect bones to muscles

Question 12

Ammonia

Answer 12

Very soluble in water & highly toxic

Question 13

Urea

Answer 13

Not as toxic as ammonia

Formed in liver from ammonia in mammals

Question 14

Uric Acid

Answer 14

Pastelike substance that is not soluble in water & therefore not very toxic

Question 15

External Respiratory Surface

Answer 15

Diffusion of gases occur at animal’s surface

Question 16

Internal Respiratory Surface

Answer 16

Diffusion of gases occurs inside the animal

Question 17

Closed Circulatory System

Answer 17

Blood is closed at all times within vessels

Blood is pumped by a heart through vessels, does not normally fill body cavities

Question 18

Open Circulatory System

Answer 18

Pump blood into a hemocoels, spaces surrounding the organs

Blood is pumped by a heart into the body cavities where tissues are surrounded by blood