Question 1

What cellular components of blood initiate blood clots?

Accepted Answer

A) lymphocytes 
B) basophils 
C) erythrocytes 
D) neutrophils 
E) platelets 
A) lymphocytes 
B) basophils 
C) erythrocytes 
D) neutrophils 
E) platelets

Question 2

The risk of atherosclerosis rises with increased levels of ____ in the blood.

Accepted Answer

A) clots 
B) LDLs 
C) HDLs 
D) protein carriers 
E) white blood cells 
A) clots 
B) LDLs 
C) HDLs 
D) protein carriers 
E) white blood cells

Question 3

Which blood vessel structure is only found in veins?

Accepted Answer

A) elastic layer 
B) basement membrane 
C) smooth muscle 
D) valve 
E) endothelium 
A) elastic layer 
B) basement membrane 
C) smooth muscle 
D) valve 
E) endothelium

Question 4

What structure is the only place where an action potential can cross to ventricles?

Accepted Answer

A) sinoatrial node 
B) atrioventricular node 
C) gap junction 
D) the left atrium 
E) conducting fiber 
A) sinoatrial node 
B) atrioventricular node 
C) gap junction 
D) the left atrium 
E) conducting fiber

Question 5

Which organisms have four-chambered hearts?

Accepted Answer

A) amphibians and most reptiles 
B) fish 
C) arthropods 
D) birds and mammals 
E) earthworms 
A) amphibians and most reptiles 
B) fish 
C) arthropods 
D) birds and mammals 
E) earthworms

Question 6

Megakaryocytes fragment to produce ____.

Accepted Answer

A) red blood cells 
B) lymphocytes 
C) platelets 
D) eosinophils 
E) neutrophils 
A) red blood cells 
B) lymphocytes 
C) platelets 
D) eosinophils 
E) neutrophils

Exam 33: Circulation

What cellular components of blood initiate blood clots?

The risk of atherosclerosis rises with increased levels of ____ in the blood.

Which blood vessel structure is only found in veins?

What structure is the only place where an action potential can cross to ventricles?

Which organisms have four-chambered hearts?

Megakaryocytes fragment to produce ____.

The Science of Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where It Starts-Photosynthesis

Releasing Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Patterns in Inherited Traits

Human Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Lifes Origin and Early Evolution

Viruses, Bacteria, and Archaea

The Protists

Plant Evolution

Fungi

Animals I: Major Invertebrate Groups

Animals Ii: the Chordates

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Reproduction and Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Effects on the Biosphere

Filters