a&p 2 Chp 21

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Normally the blood press in the the pulmonary capillary bed is about

1/5 of blood pressure satanic

The layers of an artery from the outermost to innermost are?

Adventitia, media,interna

Which statement is not true about veins

Always carry deoxygenated blood

In the sequence of vessels leading away from the heart which of the following is the most accurate/

Aorta, artery, anterior, capillary, venue, vein, vena cava

The fact that veins hold more blood than arteries is due to?

Are lager lumen

Which of these vessels is least in number in the human body?

Arteries

When contrasting arteries and veins which of the following statements is true

Arteries have a greater amount of smooth muscles over veins

Given the following values determine the direction of flow of material across the capillary bed

Blood colloidal press=25 Interstitial osmotic press=1 Blood hydrostatic press=60 Interstitial hydrostatic pressure=15 (60+1)-(25+15)=

Normally there is no fluid in the tissue space of the lungs b/c?

Blood pressure is low

Which statement about capillaries is not true/ blood pressure is lowest in capillaries

Blood pressure is lowest in capillaries

Which of the following represents the correct sequence PF parts through which blood moves plasma from the superior MESENTERIC artery to the inferior vena cava

Capillary bed in small intestine, superior MESENTERIC vein, hepatic portal vein, hepatic sinusoids, hepatic vein

Which of the following statements about BV pressure is true?

Capillary pressure is always lower than arteriole pressure

Which statement best describes arteries

Carry blood away from heart

The 3 vessels to branch from the aorta is the?

Common carotid artery

The hepatic portal circulation

Connects venous drainage of the digestive tract w/ the liver

With reference to veins

Damaged veins Can allow blood to fall backwards

The force due to the elastic rebound of the arterial walls is called

Diastolic pressure

The aorta and other arteries have thick walls containing large quantities of?

Elastic tissue

Pulsation exist in the circulatory system b/c?

Elasticity of artery

Arteries are characterized by all of the following except?

Have a prolific tributary system

The rate of formation of thrombin from prothrombin is almost directly proportional to the amount of available

In presence of ca2 imitates enzymes prothrombinase

tissue fluid is found in the?

Interstitial space

If arterial blood pressure falls markedly which if the following would you expect to occur?

Less movement of fluid from capillary vessels to tissue

Under normal conditions capillary blood pressure is always?

Lower than artery pressure, a force which pushes. Water and dissolved substance put of the blood at the arterial end of the capillary end

Plasma proteins that remain in the blood capillaries help best to?

Maintain colloidal osmotic pressure

The vessels which help to regulate blood pressure the best is?

Muscular anterior

What are the causes of edema

Obstruction of the lymphatic ducts

The ducts arteriosus allows fetal blood to move from the

Pulmonary trunk- aorta

The tissue that lines all the chambers of the heart is made up of

Simple squamous epithelium

Which of the following factors promote venous return during exercise

Skeletal muscles requiring more oxygen caring blood, increased respiratory pump, increased into abdominal pressure during respiration

When you arise from a lying position blood pressure dec this results in

Stimulation of sympathetic nerves to the blood vessels, vasoconstriction occurs

Which of the following best describes arteries

Strong elastic vessels that carry blood under high pressure

If someone is performing a phlebotomy they

Taking blood sample from vein

Which of the organs or tissues receive the greatest portion of the total blood flow when the body is at rest?

The liver

Which of the following properties of capillaries enhances the exchange that occurs b/w the capillary walls and the interstitial spaces

Thinness of interstitial space, extensive branching of capillaries, slow blood flow through capillaries

The tissue which microscopically is squamous epithelium underline by a sparse connective layer is the

Tunica intima

Flow through a blood vessel depends on the

size of lumen, blood viscosity, blood pressure


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