blood vessels

This capillary function is to allow the rapid absorption or filtration of small molecules

fenestrated

Which vessels have an internal and external elastic lamina?

large arteries

Blood usually flows to a capillary bed from

a metarteriole

Fenestrated capillaries are found in which one of the following

kidneys

Blood usually passes through on network of capillaries from the time it leaves the heart until the time it returns, a notable exception to this is:

Portal systems and anastomoses

Which is the most important mechanism for venous return?

pressure gradient

Slight vasodilation in an arteriole results in a greater increase in resistance

False

Which of the following substances will cause a rapid drop in blood pressure?

Natriuretic

Blood viscosity has no impact on blood flow or pressure

False

Parasympathetic stimulation increases the heart rate

False

Vasoconstriction will increase which of the following?

All of these are correct

Which of the following statements is true?

As blood volume decreases, blood pressure and blood flow also decrease.

As blood vessel length increases, what happens to peripheral blood resistance?

peripheral blood resistance increases

A large artery ________

Expand during systole and recoil in diastole

Which of the following best describes veins?

Thin walled, flexible, low pressure and have valves

Net filtration pressure is calculated by ________.

subtracting the blood colloid osmotic pressure from the capillary hydrostatic pressure

Slight vasodilation in an arteriole prompts a ________.

Huge decrease in resistance

Which is not detected by chemoreceptor in the carotid and aortic bodies?

blood pressure

Which vein enters the inferior surface of the liver and leads to the hepatic sinusoids?

Hepatic portal vein

what kind of capillary is this?

Fenestrated

what kind of capillary is this?

continuous

what kind of capillary is this?

sinusoid

this capillaries function is to regulate and facilitate the selective exchange of gases, water, and small molecules between the blood and tissue while maintaining a protective barrier

continuous

this capillaries function is to allow large molecules, whole blood cells, and plasma proteins to pass freely between the bloodstream and surrounding tissue

sinusoid

where are the sinusoid capillaries found?

liver, spleen, bone marrow

Continuous capillaries are found in

skeletal muscle, skin, lungs

Fenestrated capillaries are primarily found in

kidneys, small intestines, pancreas, gallbladder

Which of the following best describes veins?

thin walled, withstand low pressure, expand easy, collapse when empty, greater capacity of blood than arteries.

The endothelium is found in the ________

tunica intima

Hydrostatic pressure is ________

the pressure exerted by fluid in an enclosed space

The exchange of nutrients, oxygen, wastes and carbon dioxide between the blood and tissues takes place:

capillaries

what is the function of the tunica externa

anchor blood vessels to nearby body tissue and protect from physical damage

what is the function of the tunica media

providing structure and regulating blood flow

what is the function of the tunica interna

regulation of material exchange and prevents blood clotting

what hormone raises blood pressure and volume in the body

Angiotensin II

what hormone regulates blood pressure, volume and electrolyte balance

Aldosterone

what hormone is made by the brain to tell the kidneys how much water to save or release

Antidiuretic hormone (ADH)

what hormone triggers fight or flight

Epinephrine (Adrenaline)

what hormone triggers rest and digest

Norepinephrine (Noradrenaline)