02/07

Question 1

The P wave describes the

Answer 1

Depolarization of the atria

Question 2

The QRS wave describes the

Answer 2

Depolarization of the ventricles

Question 3

The T wave describes how

Answer 3

Ventricles repolarize

Question 4

Ventricles contract during what phase?

Answer 4

Ejection

Question 5

Contraction happens when the ventricles

Answer 5

Depolarize

Question 6

O2 rich blood leaves the heart via

Answer 6

Aorta from the left ventricle

Question 7

O2 poor blood leaves the heart via

Answer 7

Pulmonary SL valve to lungs

Question 8

The Bundle of HIS is found where?

Answer 8

IV septum

Question 9

Whats the difference between the Vena Cava and the Pulmonary Trunk / Aorta?

Answer 9

It is thinner compared to the two

Question 10

Blood vessels are

Answer 10

Organs

Question 11

Both artery and vein have outer layer called

Answer 11

Tunica externa

Question 12

What is the function of the Tunica externa?

Answer 12

It surrounds and supports a vein or artery

Question 13

The Tunica Externa has associated connected tissue which

Answer 13

Provides structure

Question 14

What is the space in a hollow organ called?

Answer 14

The lumen

Question 15

What is found under the Tunica externa?

Answer 15

The Tunica media

Question 16

The Tunica media has a layer of smooth muscle which

Answer 16

Is arranged in two layers: Circular and Longitudinal

Question 17

What happens when longitudinal muscle contracts?

Answer 17

The blood vessel shortens

Question 18

What happens when the circular muscle contracts?

Answer 18

The diameter constricts

Question 19

What is the innermost layer of a blood vessel?

Answer 19

Tunica intima

Question 20

The structure of a blood vessel wall depends on

Answer 20

The location of the blood vessel

Question 21

What is the function of capillaries?

Answer 21

They connect veins to arteries

Question 22

Capillaries will converge into

Answer 22

Small veins called venules

Question 23

Venules converge into

Answer 23

Medium and large sized veins

Question 24

The aorta is an

Answer 24

Elastic artery

Question 25

The aorta branches out into

Answer 25

Muscular arteries

Question 26

Veins are converging, whereas arteries are

Answer 26

Branching

Question 27

What are the smallest of arteries?

Answer 27

Arterioles

Question 28

What is the function of Arterioles?

Answer 28

They branch and feed capillary beds

Question 29

Muscular arteries branch into

Answer 29

Arterioles

Question 30

What do capillaries lack?

Answer 30

The Tunica externa

Question 31

Which blood vessel has a bigger lumen?

Answer 31

Vein

Question 32

What are three types of arteries?

Answer 32

1. Elastic 2. Muscular 3. Arterioles

Question 33

Aneurysm is due to

Answer 33

The weakening of the wall of the artery

Question 34

What does an Aneurysm result in?

Answer 34

A bulge and maybe burst of the blood vessel

Question 35

What is Atherosclerosis?

Answer 35

Plaque buildup in the coronary arteries

Question 36

What is a treatment for Atherosclerosis?

Answer 36

Inserting a stent, which facilitates blood flow

Question 37

Most body tissues will be in contact with

Answer 37

Capillaries

Question 38

What are Continuous Capillaries?

Answer 38

Capillaries with an endothelial layer with basement tissue

Question 39

How are the cells in Continuous Capillaries?

Answer 39

Tightly attached together with no gaps

Question 40

Continuous Capillaries are found in areas that need

Answer 40

Tight regulation

Question 41

Which are the leakier capillaries compared to Continuous?

Answer 41

Fenestrated

Question 42

Describe Fenestrated Capillaries?

Answer 42

They have little pores

Question 43

Fenestrated Capillaries are found in areas which

Answer 43

Need filtration, like the kidneys

Question 44

What are the most leakiest capillaries?

Answer 44

Sinusoid

Question 45

Why are Sinusoid Capillaries the leakiest?

Answer 45

They lack basement membranes

Question 46

Sinusoid Capillaries are found in areas in which

Answer 46

A lot of exchange is required

Question 47

How do capillary beds regulate how much blood is flowing?

Answer 47

Through the use of Sphincters

Question 48

What are Sphincters?

Answer 48

Modified bands of smooth muscle

Question 49

What happens when Sphincters contract?

Answer 49

They close the muscle

Question 50

What happens when Sphincters open?

Answer 50

The blood flowing from arterial goes out through entire capillary bed

Question 51

Capillaries are found in all tissues except

Answer 51

- Cartilage - Epithelia - Cornea and Lens