Histo Circulatory

Question 1

2 Divisions of Circulatory system

Answer 1

1) Pulmonary circulation

2) Systemic circulation

Question 2

Circulation going towards the lungs

Answer 2

Pulmonary circulation

Question 3

Circulation from Heart and towards the rest of the body

Answer 3

Systemic circulation

Question 4

Components of the Circulatory system

Answer 4

Heart

arteries

Capillaries

Veins

Question 5

Component of Circulatory system

where it pumps blood through the system

Answer 5

Heart

Question 6

Component of Circulatory

Blood vessels efferent from the heart

Answer 6

Arteries

Question 7

Component of Circulatory

Smallest vessel, site of O2, CO2, nutrient, and waste exchange

Answer 7

Capillaries

Question 8

Component of Circulatory

Carry blood towards the heart

Answer 8

Veins

Question 9

Chambers of the heart: (4)

Answer 9

Right atrium
Left atrium
Right ventricle
Left ventricle

Question 10

Supply blood towards the muscle of the heart

Answer 10

Coronary arteries

Question 11

Major layers of the heart layer

Answer 11

Endocardium (Inside) (Conduction layer)

Myocardium

Epicardium (Covering) (Visceral cardium)

Question 12

Semipermeable barrier between blood and interstitial fluid

Answer 12

Endothelium

Question 13

Squamous, polygonal, elongated with the long axis in the direction of blood flow

Answer 13

Endothelium

Question 14

Tissues of the vascular wall

Functions of Endothelium

Answer 14

1.) Presents a nonthrombogenic surface

2.) Regulate local vascular tone and blood flow

3.) Inflammation and local immune response

4.) Secretion of growth factor

Question 15

Tissues of the vascular wall

Arranged in layers

Answer 15

Smooth muscle

Question 16

Tissues of the vascular wall

Variable amounts and proportions based on local functional requirement

Answer 16

Connective tissues

Question 17

Tissues of the vascular wall

Wall of all blood vessels except _________________ contain smooth muscle and connective tissue

Answer 17

capillaries

Question 18

Blood vessel layers

Endothelium, loose connective tissue, smooth muscle fibers

Answer 18

Tunica Intima

Question 19

Blood vessel layers

Concentric layers of helically arranged smooth muscle, elastic fibers

Answer 19

Tunica Media

Question 20

Blood vessel layers

Type 1 collagen and elastic fibers

Vasa vasorum “Vessels of the vessel”

Answer 20

Tunica Adventitia

Question 21

“Vessels of the vessel”

Answer 21

Vasa vasorum

Question 22

Arterial sensory structures

Baroreceptors (Blood pressure)

Answer 22

Carotid sinuses (Neck)

Question 23

Arterial sensory structures

Chemoreceptors (O2, CO2, pH)

Answer 23

Carotid bodies and aortic bodes

Question 24

Arterial sensory structures

Dopamine, acetylcholine (neurotransmitters)

Answer 24

Glomus cells

Question 25

Alternative microvascular pathways

Arterioles bypass capillary networks and connect directly to venules

Answer 25

Arteriovenous shunts

Question 26

Alternative microvascular pathways

Blood flows through two successive capillary beds separated by a portal vein

Answer 26

Portal system

Question 27

Collects interstitial fluid from the tissue spaces as Lymph and return it to the blood

Answer 27

Lymphatic Vascular System