Ch 8

Question 1

An increase in heart rate called ____ occurs when ___ from sympathetic nerves stimulates an increase in the depolarization rate of pacemaker cells

Answer 1

Tachycardia

NE

Question 2

A pulmonary blood circuit occurs in ____

Answer 2

Most tetrapods

Question 3

During ___\ blood pressure in systemic arteries exceeds blood pressure in the ventricles and an initial backflow of blood closes the semilunar valves

Answer 3

Ventricular diastole

Question 4

Which of the following would lead to edema

Answer 4

Blockage of lymphatic capillaries by parasites

Question 5

In an ECG the ____ coincides with the beginning of ventricular systole

Answer 5

QRS complex

Question 6

Which of the following correctly describes the relative blood pressure in systemic and pulmonary blood circuits

Answer 6

Systemic>pulmonary

Question 7

Relatively ___ changes in blood pressure are regulated by a \__ control mechanism called the baroreceptor reflex

Answer 7

Quick, short term

Neural

Question 8

An increase in ______ would tend to counteract an increase in blood pressure

Answer 8

Urine output

Question 9

A(n) ___ has a closed circulatory system

Answer 9

Octopus

Question 10

The right ventricle pumps _______ and the left ventricle pumps

Answer 10

Deoxygenated blood to the lungs

Oxygenated blood to the body

Question 11

When standing, the blood pressure in an artery in your ankle would be ____ the blood pressure in an artery in your arm

Answer 11

Greater than

Question 12

_______ volume refers to the amount of blood in ventricles just prior their contraction. If this volume ______ then the heart contracts more forcefully

Answer 12

End diastolic

Increases

Question 13

During exercise increased metabolic rate of muscle would lead to ______ carbon dioxide production that would trigger ______ in muscle capillaries

Answer 13

Increases

Vasodilation

Question 14

The T wave of an ECG coincides with

Answer 14

Ventricular repolarization

Question 15

The correct sequence of blood flow through heart valves is _____

Answer 15

Right AV, pulmonary semilunar, left AV, Aortic semilunar

Question 16

At the VENULE end of capillaries, fluid moves _____ capillaries because blood pressure is _____ than osmotic pressure due to plasma proteins

Answer 16

Into

Less

Question 17

Arteries are defined as blood vessels that carry _____\

Answer 17

Blood away from the heart

Question 18

In comparison to the features of a closed circulatory system, which if he follow un is not a characteristic of an open circulatory system

Answer 18

More rapid return of blood to the heart

Question 19

Which if he following is the correct path of blood flow

Answer 19

Right atrium
Right ventricle
Pulmonary arteries 
Pulmonary veins 
Left atrium 
Left ventricle

Question 20

An increase in ______ does not promote vasodilation

Answer 20

Nitric oxide

Question 21

_______ shock results from severe allergic reaction

Answer 21

Anaphylactic

Question 22

Insects and most crustaceans have ______ circulatory systems which transports a fluid called ______ through the body

Answer 22

An open

Hemolymph

Question 23

The walls of _____ are thicker primarily because the tunica _____ is thicker

Answer 23

Arteries

Media

Question 24

The type of capillaries within skin and muscles are _____

Answer 24

Continuous

Question 25

_____ are leukocyte that fight infection via phagocytosis

Answer 25

Neutrophils