Chapter 14

Question 1

What determiners how blood circulates?

Answer 1

blood vessels

Question 2

What type of system to we have?

Answer 2

Closed system

Question 3

What does the Cardiovascular Systemdo?

Answer 3

Transport of material: gases, nutrients, waste, communication, defense against pathogens, temperature homeostasis

Question 4

Systemic circulation is determined by…

Answer 4

Dynamics of blood flow
Anatomy of circulatory system
Regulatory mechanisms that control heart and blood vessels

Question 5

How does blood flow start?

Answer 5

right atrium to the right ventricle out to the pulmonary system…

Question 6

All blood vessels have in common (except capillaries)..

Answer 6

smooth muscle, to contract

Question 7

How is pressure created?

Answer 7

by contracting muscles is transferred to blood

Question 8

Blood flows down…

Answer 8

a pressure gradient

Question 9

If blood vessels dilate

Answer 9

blood pressure decreases

Question 10

If blood vessels constrict

Answer 10

blood pressure increases

Question 11

Greatest zone of pressure is found were?

Answer 11

Aorta or the heart

Question 12

Once blood flows down it begins to lose energy due too…

Answer 12

friction

Question 13

If resistance increases…..

Answer 13

flow decreases

Question 14

If resistance decreases….

Answer 14

flow increases

Question 15

There is an inverse proportional relationship between

Answer 15

pressure, flow and resistance

Question 16

The longer the blood vessel

Answer 16

the more friction

Question 17

What function does pericardium serve?

Answer 17

a layer around your heart, in between the pericardium and your heart there is fluid, which is there to help reduce friction

Question 18

What two cells are important to the heart?

Answer 18

pacemaker cells, cardiomyocytes

Question 19

what is the function of pacemaker cells?

Answer 19

they depolarize

Question 20

What sends the signal to your heart?

Answer 20

intercalated disks

Question 21

Intercalated disks

Answer 21

Intercalated disks – separated one cardiomyocytes from another, communicate through electrical- gap junctions

Question 22

desmosomes

Answer 22

are anchors

Question 23

What brings a signal from the surface to the internal of the cell?

Answer 23

T-tubles

Question 24

What type of channel? (cardiomyocytes)

Answer 24

calcium (is important for creating ATP)

Question 25

Action potential in cardiac muscle cells? (cardiomyocyste)

Answer 25

Plato (calcium) Ca

Question 26

What ion is responsible for depolarization? (cardiomyocytes)

Answer 26

sodium (Na)

Question 27

What ion is responsible for repolarization? (cardiomyocytes)

Answer 27

potassium (K)

Question 28

What speeds up depolarization in pacemaker?

Answer 28

K

Question 29

How does your heartbeat start?

Answer 29

Pacemaker cells have to fire

Question 30

Two types of circulatory systems?

Answer 30

Pulmonary and Systemic system

Question 31

Pulmonary System

Answer 31

pick up oxygen and blood, dispose of carbon waste

Question 32

Systemic System

Answer 32

delivery nutrients and oxygen blood to all cells