CE 2 Flashcards
vascular pressure that declines from roughly 35 mm Hg to about 18 mm Hg is the…
Capillary hydrostatic pressure
Which of the following is a distinct feature of arteries compared to veins?
Arteries contain an internal elastic membrane in their tunica intima.
How is the mean arterial pressure (MAP) calculated?
It is diastolic pressure plus (pulse pressure divided by 3)
Why are valves found in veins but not in arteries?
ABecause venous blood pressure is lower
b) Because valves help prevent the backflow of blood
The hepatic portal system is responsible for delivering
Nutrients to the liver
What is the function of the ductus arteriosus in fetal circulation?
It connects the aorta and pulmonary trunk, bypassing the pulmonary circulation.
Mr. Petit has been prescribed a medication that inhibits angiotensin-converting enzyme
It will inhibit the conversion of angiotensin-I to angiotensin-Il
When blood pressure is below normal, what happens to cardiac output and peripheral
vasculature?
Cardiac output increases and peripheral vasoconstriction occurs
Why does the majority of filtration occur at the arterial end of a capillary?
Capillary hydrostatic pressure (CHP) is higher at the arterial end.
ADH, EPO, Angiotensin-Il, and ANP all play roles in the long-term regulation of blood
Golume. Which two are also key in regulating blood pressure?
ADH and angiotensin-ll
The heart, capillaries and arteries contain
_ percent of the blood volume, and the
venous system contains
- percent. This is because
35; 65; of high capacity of veins
Which part of the vascular system acts as a blood reservoir and holds over 60% of the body’s blood?
Veins
What is the function of atrial baroceptors
To monitor blood pressure at the end of the systemic circuit
Which of the following occurs when blood pressure is above normal?
Parasympathetic stimulation and sympathetic inhibition
The largest force driving the movement of fluid from the interstitial spaces back into the capillaries is:
Blood colloid osmotic pressure
The classic pathway of complement activation starts when the protein a bintoso…
2 antibodies attached to an antigen
Which type of cells express CD4 proteins and engage with MHC Class Il molecules?
Helper t cells
Lacteals, which are specialized lymphatic capillaries, are….
necessary for the transport of dietary lipids.
Which antibody class is predominantly present in sweat, tears, breast milk, and
gastrointestinal secretions?
IgA
Where does the lymph from the right foot drain into?
Thoracic duct
Genetic recombination creates diversity in which components) of the immune system?
MHC antigens and antigen receptors
What type of adaptive immunity is produced by the intravenous administration immunoglobulins?
Artificially acquired passive immunity
The primary lymphoid tissues consist of…
Bone marrow and thymus
Lymph fluid enters the venous circulation through the…
Subclavian veins
_______ are stationary macrophages located in the liver.
Stellate cells
Histamine promotes blood flow and increases vascular permeability. This explains all the following changes during inflammation, except:
Chemotaxis of phagocytes
Leslie has a severe sore throat, and the lymph nodes in her neck are swollen. This suggests that:
The lymph nodes are containing a higher number of lymphocytes,
A key protein involved in activating the alternative pathway of complement activation
Properdin
Severe Combined Immunodeficiency (SCID) is characterized by….
Deficiency in both T AND B cell function
If a routine examination shows a high IgM titer for the mumps virus but a low IgG anti-mumps titer, it will indicate that the person…
was recently infected with mumps.
