40B - Lecture - Chapter #21

Question 1

Tunica Interna

Answer 1

Inner portion next to blood
Contains:
Endothelium
Elastic Tissue

Question 2

Tunica Media

Answer 2

Contains:
Smooth muscle
*Thinner in vein than artery

Question 3

Tunica Externa

Answer 3

Contains:
Connective Tissue
*Thinner in vein than artery

Question 4

Difference between leumen in artery and vein

Answer 4

Vein is wider / larger

Artery is smaller

Question 5

Aneurysm

Answer 5

Weakening in blood vessel, usually arteries because they are under high blood pressure

Question 6

Where does skeletal muscles help with blood flow?

Answer 6

In deep veins

Question 7

Varicose Veins

Answer 7

Valve fails

Question 8

Continuous Capillary

Answer 8

“Leaky”
Can exchange substances, small proteins
Contains: Pinocytic vesicle and intercellular cleft
Vascularizes: CNS, Muscle tissue, connective tissue, pulmonary capillaries

Question 9

Fenestrated Capillary

Answer 9

“Leakier”
Contains: Fenestrated (pores) and intercellular cleft
Vascularizes: Kidney, Endocrine glands

Question 10

Sinusoid Capillaries

Answer 10

“Leakiest”
Contains: Incomplete basement membrane, intercellular cleft (large gaps)
Vascularizes: RBM, Sleep, Liver

Question 11

Filtration

Answer 11

Fluid out of capillaries

Question 12

Reabsorption

Answer 12

Osmotic fluid into capillaries

Question 13

What causes Filtration?

Answer 13

Blood pressure
Filters 20L/day
H2O + Solutes

Question 14

What causes reabsorption?

Answer 14

Albumin = BCOP

Reabsorbs 17L/day, 3L/day goes to lymphatic capillaries

Question 15

Net filtration

Answer 15

+ 10mm Hg

Question 16

Net Reabsorption

Answer 16

-9 mm Hg

Question 17

Edema

Answer 17

Excess fluid in interstitial area around tissues or cells

Question 18

Causes of edema

Answer 18

Liver disease: Decrease in albumin

Kidney disease: Albumin is excreted

Question 19

Pulmonary Edema

Answer 19

LEFT valve problem

Fluid backs up in lung

Question 20

Peripheral Edema

Answer 20

RIGHT valve problem
Swelling in leg
Gets backed up inn IVC and SVC

Question 21

Blood flow

Answer 21

Volume of blood and flows through any tissue in a given time period in ml/min

Question 22

Mechanisms that effect blood flow

Answer 22

1. BP

2. Vascular resistance: size of leumen, viscosity, total blood vessel length

Question 23

Shock

Answer 23

Failure of the cardiovascular system to deliver enough oxygen and nutrients to meet the needs of cells

Question 24

Hypovolemic Shock

Answer 24

Decrease blood volume, decrease blood pressure

Question 25

Cardiogenic shock

Answer 25

Due to poor heart function

Question 26

Vascular shock

Answer 26

Inappropriate vasodilation of blood vessel

Question 27

Obstructive Shock

Answer 27

Blocking blood flow