Chapter 23 Physiology and Hemodynamics

Question 1

The shape of veins is determined by

Answer 1

Transmural pressure

Question 2

If the transmural pressure is low what is the result of the shape

Answer 2

Dumbbell

Question 3

If the transmural pressure is high what is the shape

Answer 3

Circular

Question 4

HP is _____ at the heart level

Answer 4

0

Question 5

HP is added to the existing circulatory pressure and is related to ______

Answer 5

Position

Question 6

In the ______ position HP exerted on veins and arteries is negligible. Assumed to be 0

Answer 6

Supine

Question 7

In the ______ position HP gradually increases from level to level down the body reaching approx ______ mmHg at the ankle

Answer 7

Standing, 100

Question 8

Body parts above the heart with have a ______ HP

Answer 8

Negative

Question 9

Vessels will collapse at _____ mmHg

Answer 9

0

Question 10

Arm P= circulatory P - _____ mmHg

Answer 10

50

Question 11

Ankle P= circulatory P + ______ mmHg

Answer 11

100

Question 12

______ are reservoirs for blood collection

Answer 12

Veins

Question 13

During inspiration there is a _____ in intra thoracic pressure

Answer 13

Decrease

Question 14

During inspiration there is an ______ in blood flow from upper extremities

Answer 14

Increase

Question 15

During inspiration there is an _____ in intra-abdominal pressure

Answer 15

Increase

Question 16

During inspiration there is a _____ in blood flow from lower extremities

Answer 16

Decrease

Question 17

During exhalation there is an ______ in intra-thoracic pressure

Answer 17

Increase

Question 18

During exhalation there is a ______ in blood flow from upper extremities

Answer 18

Decrease

Question 19

During exhalation there is an ______ in intra-abdominal pressure

Answer 19

Decease

Question 20

During exhalation there is a _______ in blood flow from lower extremities

Answer 20

Increase

Question 21

Intrathoracic and intra-abdominal pressure increases significantly during _______ _______

Answer 21

Valsalva maneuver