a&p 2 Chp 21
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
