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Zoo-pourri

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Final Jeopardy

Of dendrite, sarcomere, cell body, axon, and trigger zone,

this is NOT found in the neuron. - sarcomer

A chemical that crosses a synapse to stimulate a target

cell - neurotransmitter

During this phase Na+ channels are open - 2

Action Potential

-100

-80

-60

-40

-20

0

20

40

60

time

mem

bra

ne

po

ten

tial

(m

V)

1

2 3

4 5

A light sensing cell found in the vertebrate eye is called this

- photoreceptor

This part of the brain that expanded in mammals to allow

for complex integration - cerebrum

Human hearts have this many chambers - 4

In this vessel, blood travels the slowest - capillary

This blood vessel returns oxygenated blood back to the

heart from the lungs. – pulmonary vein

Comparing thickness in the walls of arteries, walls of veins

are - thinner

In a blood pressure reading of 120/70, 120 refers to this -

systolic

The process where substances move from an area of high

concentration to an area of low concentration - diffusion

Thin walled air sacs in the lungs are called this - alveoli

This is the muscle that allows for ventilation of the lungs in

mammals - diaphragm

Of High or Low pH, this condition creates the highest

affinity for oxygen in the blood. – high

This type of pressure is exerted on the lungs during inhalation

(inspiration) in mammals. - negative

Annelids use this as their osmoregulatory organ -

nephridia

This is the part of the nephron where countercurrent exchange is used to

concentrate urine. – Loop of Henle

True or False, Saltwater fish drink copious amounts of

seawater – True

This is the part of the nephron where reabsorption of glucose

occurs – distal tubule

This structure in the nephron is usually larger in desert animals – Loop of Henle

This structure increases surface area for absorption in

the small intestine - villi

Of mouth, stomach, gall bladder, and small intestine, this organ does NOT secrete

digestive enzymes. – gall bladder

This vital nutrient acts primarily as a coenzyme -

vitamin

This hormone, released by the pancreatic islets of

Langerhans, causes glucose to be taken up by cells - insulin

Bile is used to do this to fat. - emulsify

This protein makes up the thin filaments in

sarcomeres - actin

This protein makes up the thick filaments in

sarcomeres - myosin

The part of the muscle cell that releases calcium ions

is this – Sarcoplasmic reticulum

This must be added to myosin to reset the contraction cycle -

phosphate

Land Animals with hydrostatic skeletons use this type of

muscular contraction primarily to move - peristalsis

True or False, endotherms can maintain their body

temperature in hot or cold weather. - true

Of physiological or behavioral, Ectotherms only use this type

of response to changes in environmental temperature. -

behavioral

This is the stimulus to which the fish lateral line and the mammalian semicircular

canals integrate. – balance (orientation)

Cnidarians use this structure to absorb gases and nutrients.

– gastrovascular cavity

These structures probably evolved from gut out-

pouchings in certain species of fish. - lung

Development

This is the first stage in vertebrate embryo development when the cells are pleuripotent

– gastrula