CH 19 HW

-2

Assume a person is experiencing a hemorrhage and the HPc has dropped to 23 mm Hg at the arteriole end of the capillary. Calculate net filtration pressure (NFP) at the arteriole end of the capillary. -8 mm Hg -2 mm Hg 2 mm Hg 10 mm Hg

brachiocephalic trunk

From what artery does the right common carotid artery arise? external carotid artery brachiocephalic trunk internal carotid artery aortic arch

lungs

In local autoregulation of blood flow, usually low oxygen levels cause vasodilation. Which tissue shows the opposite pattern? skeletal muscles lungs heart liver

blood pressure

In the capillaries, hydrostatic pressure (HP) is exerted by __________. proteins in the blood blood pressure

superior mesenteric artery

Name the artery at C. renal artery superior mesenteric artery common iliac artery gonadal artery

femoral vein

Name the vein at A. small saphenous vein femoral vein external iliac vein fibular vein

venous

Reabsorption of fluid into the capillary takes place at the arterial end or venous end of the capillary? venous arterial

proteins in the blood

The colloid osmotic pressure in the capillary is caused by __________. blood pressure proteins in the blood

capillary; interstitial fluid

The net hydrostatic pressure (HP) is the hydrostatic pressure in the __________ minus hydrostatic pressure in the __________. interstitial fluid; capillary capillary; interstitial fluid

hepatic portal vein

Toxic substances absorbed by the digestive system put stress on the liver because all of the blood from the digestive organs is drained by the __________. hepatic portal vein abdominal aorta inferior vena cava suprarenal veins

chemoreceptor reflexes

Vasomotion because of changes in pH or CO2 levels would be a result of __________? angiotensin regulation chemoreceptor reflexes baroreceptor reflexes renal mechanisms

10 mm Hg

What is the value for the net filtration pressure (NFP) at the arteriolar end of the capillary? 1 mm Hg 10 mm Hg 26 mm Hg 35 mm Hg

osmotic pressure in capillary (OPc)

What pressure is responsible for reabsorption and for pulling fluids into the venous end of capillaries? hydrostatic pressure in interstitial fluid (HPif) osmotic pressure in interstitial fluid (OPif) osmotic pressure in capillary (OPc) hydrostatic pressure in a capillary (HPc)

C

What vein is formed from the union of the anterior tibial vein and posterior tibial vein? A B C D

A

Which artery branches into the common hepatic artery, splenic artery, and left gastric artery? A B C D

net osmotic pressure

Which net pressure draws fluid into the capillary? net osmotic pressure net hydrostatic pressure

Epinephrine decreases peripheral resistance by affecting blood vessel diameter.

Which of the following hormonal effects is mismatched? -Aldosterone increases blood pressure by affecting blood volume. -Atrial natriuretic protein decreases blood volume by affecting blood vessel diameter. -Angiotensin increases peripheral resistance by causing vessel diameter changes. -Epinephrine decreases peripheral resistance by affecting blood vessel diameter.

bulk flow

Which of the following is NOT a capillary transport mechanism? -bulk flow -movement through intracellular clefts or fenestrations -diffusion through the endothelial cell membrane -transport via vesicles or caveolae

Angiotensin II promotes vasodilation that decreases peripheral resistance.

Which of the following is NOT one of the ways that angiotensin II increases arterial blood pressure? -Angiotensin II prompts the release of antidiuretic hormone (ADH). -Angiotensin II triggers the sensation of thirst. -Angiotensin II promotes vasodilation that decreases peripheral resistance. -Angiotensin II stimulates the secretion of aldosterone

atrial natriuretic peptide (ANP)

Which of the following will lower blood pressure? antidiuretic hormone (ADH) angiotensin II atrial natriuretic peptide (ANP) aldosterone

proteins

Which of the following would NOT move by diffusion across a capillary endothelium to or from the surrounding interstitial fluid and tissues? oxygen lipid-soluble substances proteins carbon dioxide

conversion of angiotensin I into angiotensin II

Which of the following would be interrupted in the indirect renal mechanism if angiotensin converting enzyme (ACE) is blocked from performing its job? conversion of angiotensin I from angiotensinogen release of renin from the kidneys sympathetic nervous system activity conversion of angiotensin I into angiotensin II

anemia

Which of the following would decrease peripheral resistance to blood flow? anemia vasoconstriction atherosclerosis increasing blood vessel length

34 mm Hg

Which of the following would reflect the typical net hydrostatic pressure (HP) at the arterial end of the capillary? 1 mm Hg 12 mm Hg 34 mm Hg

increased filtration by the kidneys

Which of these responses is NOT a response consistent with a drop in mean arterial pressure? secretion of aldosterone release of renin from the kidneys increased filtration by the kidneys increased thirst

because capillaries are fragile and extremely permeable

Why is it important that blood pressure drop to lower levels as it reaches the capillary beds? -because capillaries actually are high-pressure vessels -because capillaries actually need a higher blood pressure for filtration activities -because capillaries depend on the lower pressure to prevent fluid exchange between the capillaries and the tissue fluid -because capillaries are fragile and extremely permeable