Exam 3 Multiple Choice Flashcards

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1
Q

The archenteron is characteristic of which stage of animal development?

A

C) gastrula

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2
Q

The release of cortical granules following fertilization leads to

A

D) erection of a fertilization membrane

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3
Q

The inner cell mass of a placental mammals blastula will become

A

A) the embryonic germ layers

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4
Q

The neural plate is derived from

A

A) ectoderm

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5
Q

Vertebrate skin is subject to abrasion against environmental substrata microorganisms that may cause disease, and terrestrial forms are exposed to dry air. What type of epithelium comprises skin?

A

E) Stratified squamous

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6
Q

A tendon is an example of

A

B) dense connective tissue

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7
Q

Most of the exchange surfaces of multicellular animals are lines with

A

D) epithelial tissue

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8
Q

Much of the coordination of the vertebrate body functions via chemical signals distributed by blood flow is accomplished by the

A

B) endocrine system

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9
Q

The process by which living things maintain fairly stable internal conditions necessary for survival is termed

A

E) homeostasis

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10
Q

As the body temperature of a bearded dragon rises, it seeks shade from the sun to cool itself. This is an example of

A

C) negative feedback

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11
Q

Which of the following is an effective means of conserving heat?

A

B) subcutaneous fat

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12
Q

Which of the following are considered inputs for thermal energy?

A

B) condensation

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13
Q

Somatic growth, reproduction and reserves represent __ of chemical energy?

A

C) storage

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14
Q

Which animal would you expect to have the lowest mass-specific (L O2/hr) metabolic rate?

A

D) elephant

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15
Q

The relatively hairless ventral (pubic) region of a dog is considered a(n)

A

B) heat window

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16
Q

Blood flows towards the heart in

A

B) pulmonary veins

17
Q

One-way valves are associated with

A

E) A, B, and C
(A: the heart, B: veins, C: lymph vessels)

A) the heart
B) veins
C) lymph vessels
D) capillaries

18
Q

The lowest pressure cardiovascular system is found in a(n)

A

A) fish

19
Q

The primary driving force for the reabsorption of filtered plasma from the interstitial (extracellular) space is

A

B) colloidal osmotic pressure

20
Q

To adjust blood pressure independently in the capillaries of the gas-exchange surface and in the capillaries of the general body circulation, an organism would need a(n)

A

E) four-chambered heart

21
Q

Which of the following is the correct sequence of blood flow in reptiles and mammals?

A

D) vena cava => right atrium => right ventricle => pulmonary circuit

22
Q

The set of blood vessels with the lowest blood pressure driving flow is

A

E) the veins

23
Q

Which medium contains the least amount of oxygen?

A

B) marine water

24
Q

In an EKG, the QRS complex represents

A

E) B and C
(B: ventricular depolarization and C: atrial repolarization)

A) atrial depolarization
B) ventricular depolarization
C) atrial repolarization
D) ventriciular repolarization

25
Q

Countercurrent exchange in the fish gill helps to maximize

A

C) diffusion of respiratory gases

26
Q

Countercurrent exchange is evident in

A

A) the flow of water across the gills of a fish and that of blood within those gills

27
Q

Thick-walled vessels embedded with smooth muscle and without valves describe

A

A) arteries

28
Q

Capillaries are

A

E) all of these

  • high resistance
  • low flow
  • thin-walled
  • fenestrated
29
Q

The most important variable governing resistance in blood vessels is

A

C) vessel radius

30
Q

Lungs are invaginated structures so that

A

B) water loss can be minimized