Seatwork 17-19

Question 1

Nucleus has two lobes; contains granules of lysosomal enzymes; functions in attacking parasitic worms.

Answer 1

Eosinophil

Question 2

Nucleus is multilobed; functions as a phagocyte; contains fine indistinct granules.

Answer 2

Neutrophil

Question 3

Transports CO2 and Oxygen

Answer 3

Erythrocyte

Question 4

Contains a U- or an S- shaped nucleus’ granules stain very dark’ releases histamine and heparin.

Answer 4

Basophil

Question 5

Largest of the WBCs; crucial in defense against viruses; associated with chronic infections

Answer 5

Neutrophil

Question 6

The major contributor to plasma osmotic pressure

Answer 6

Albumin

Question 7

Thrombin catalyzes the activation of these molecules present in plasma

Answer 7

Fibrinogen

Question 8

Forms the structural framework of a blood clot

Answer 8

Fibrinogen

Question 9

Makes up most of plasma protein

Answer 9

Albumin

Question 10

What are the two phases of the cardiac cycle

Answer 10

Systole and Diastole

Question 11

At which phase in the cardiac cycle is the heart at relaxation

Answer 11

Diastole

Question 12

At which phase in the cardiac cycle is the heart contracting?

Answer 12

Systole

Question 13

Define cardiac output

Answer 13

The volume of blood pumped per minute by each ventricle

Question 14

How is cardiac output calculated?

Answer 14

stroke volume x heart rate

Question 15

What is stroke volume?

Answer 15

volume of blood that is ejected from a ventricle per contraction

Question 16

How do you calculate stroke volume?

Answer 16

EDV-ESV

Question 17

What are the three factors that affect stroke volume?

Answer 17

Contractility, preload, afterload

Question 18

What is contractility?

Answer 18

The vigor of the heart muscles during systole

Question 19

What is preload?

Answer 19

The filling pressure of heart at the end of diastole

Question 20

What is after load?

Answer 20

The pressure the heart must work to eject blood during systole

Question 21

how do mean arterial blood pressure (MABP) and Systemic vascular resistance (SRV) factor together to produce the total cardiac output (CO)?

Answer 21

Cardiac Output (CO) is equal to the Mean Arterial Blood pressure (MABP) divided by the Systemic Vascular Resistance (SVR)

CO= MABP/SVR

Question 22

Name the three primary factors that influence circulation

Answer 22

Arterial blood pressure
Systemic Vascular Resistance
Cardiac Output

Question 23

explain how dehydration and vessel length increase systemic vascular resistance

Answer 23

Dehydration increases viscosity, which increases the resistance.

Question 24

What is viscosity?

Answer 24

thickness of blood

Question 25

What is viscosity dependent on?

Answer 25

the ratio of red blood cells to plasma (fluid) volume

Question 26

Define venous return of blood

Answer 26

the flow of blood from the periphery back to the right atrium