Question 1

_________________ are the blood cells that carry oxygen throughout the body.

Accepted Answer

A) Erythrocytes 
B) Leukocytes 
C) Thrombocytes 
D) Platelets 
A) Erythrocytes 
B) Leukocytes 
C) Thrombocytes 
D) Platelets

Question 2

Trace the wave of depolarization through the heart.

Accepted Answer

A) SA node $\rarr$ atria$\rarr$ ventricles $\rarr$AV node $\rarr$ bundle of His $\rarr$ Purkinje fibers 
B) AV node $\rarr$ atria $\rarr$ SA node $\rarr$ ventricles$\rarr$ Purkinje fibers $\rarr$ bundle of His 
C) AV node $\rarr$ atria $\rarr$ SA node $\rarr$ Purkinje fibers $\rarr$ bundle of His $\rarr$ ventricles 
D) SA node $\rarr$ atria $\rarr$ AV node $\rarr$ bundle of His $\rarr$ Purkinje fibers $\rarr$ ventricles 
A) SA node $\rarr$ atria$\rarr$ ventricles $\rarr$AV node $\rarr$ bundle of His $\rarr$ Purkinje fibers 
B) AV node $\rarr$ atria $\rarr$ SA node $\rarr$ ventricles$\rarr$ Purkinje fibers $\rarr$ bundle of His 
C) AV node $\rarr$ atria $\rarr$ SA node $\rarr$ Purkinje fibers $\rarr$ bundle of His $\rarr$ ventricles 
D) SA node $\rarr$ atria $\rarr$ AV node $\rarr$ bundle of His $\rarr$ Purkinje fibers $\rarr$ ventricles

Question 3

How do veins prevent the backflow of blood within them?

Accepted Answer

A) By having thick,muscular walls 
B) Because of the tiny lumen inside them 
C) They are capable of contracting 
D) They possess flaplike valves 
A) By having thick,muscular walls 
B) Because of the tiny lumen inside them 
C) They are capable of contracting 
D) They possess flaplike valves

Question 4

After blood flows through the right ventricle of the human heart,its next major destination is:

Accepted Answer

A) the lungs 
B) the arms 
C) the systemic system 
D) the left ventricle 
A) the lungs 
B) the arms 
C) the systemic system 
D) the left ventricle

Question 5

Which animal has countercurrent heat exchange to retain heat in a cold environment?

Accepted Answer

A) Bees 
B) Bony fish 
C) Foxes 
D) Birds 
E) Whales 
A) Bees 
B) Bony fish 
C) Foxes 
D) Birds 
E) Whales

Exam 23: Circulation

_________________ are the blood cells that carry oxygen throughout the body.

Trace the wave of depolarization through the heart.

How do veins prevent the backflow of blood within them?

After blood flows through the right ventricle of the human heart,its next major destination is:

Which animal has countercurrent heat exchange to retain heat in a cold environment?

The Science of Biology

The Chemistry of Life

Molecules of Life

Cells

Energy and Life

Photosynthesis: Acquiring Energy From the Sun

How Cells Harvest Energy From Food

Mitosis

Meiosis

Foundations of Genetics

DNA: the Genetic Material

How Genes Work

Genomics and Biotechnology

Evolution and Natural Selection

How We Name Living Things

Prokaryotes: the First Single-Celled Creatures

Protists: Advent of the Eukaryotes

Fungi Invade the Land

Evolution of the Animal Phyla

History of the Vertebrates

How Humans Evolved

The Animal Body and How It Moves

Respiration

The Path of Food Through the Animal Body

Maintaining the Internal Environment

How the Animal Body Defends Itself

The Nervous System

The Senses

Chemical Signaling Within the Animal Body

Reproduction and Development

Evolution of Plants

Plant Form and Function

Plant Reproduction and Growth

Populations and Communities

Ecosystems

Behavior and the Environment

Human Influences on the Living World

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