bios 256 lab review exam questions with complete solutions (Rated A+)
the descending limb of the loop of henle - Answer-contains fluid that becomes more concentrated as it moves down into the medulla
the function of angiotensin II is to - Answer-constrict arterioles and increase blood pressur...
bios 256 lab review exam questions with
complete solutions (Rated A+)
the most important line of defense used by the innate defense system is - Answer-
inflammation
pyrogens, secreted by activated phagocytes cause - Answer-elevation of internal body temperature//fever
fever - Answer-production is regulated by chemicals that reset the body's thermostat to a higher setting
which is a correct statement about the functions of antibodies? - Answer-complement fixation is the main mechanism by which antibodies provide protection
select the correct statement about immunodeficiency - Answer-the causative agent is acquired immune deficiency syndrome (AIDS) is a virus that recognizes CD4 proteins
which of the following is NOT necessary to supply the body with O2 and dispose of CO2? - Answer-diffusion of CO2 into pulmonary capillaries and O2 into alveoli
when a gas mixture is in contact with liquid, each gas will dissolve in the liquid - Answer-
each gas will dissolve in the liquid in proportion to its partial pressure
with the Bohr effect, more oxygen is released to the tissues because - Answer-a decrease in pH (acidosis) weakens the hemoglobin-oxygen bond
Which of the following does NOT influence the increase in ventilation that occurs as exercise is initiated? - Answer-decrease in lactic acid levels
the filtration membrane includes all except - Answer-renal fascia
which of the following is NOT reabsorbed by the proximal convoluted tubule? - Answer-
creatinine
which part of the kidney is hypertonic, aiding in water reabsorption? - Answer-renal medulla
an increase in the permeability of the cells of the collecting tubule to water is due to - Answer-an increase in the production of ADH
which of the following acts as the trigger for the initiation of micturition (voiding)? - Answer-the stretching of the bladder wall true or false: no new antibiotic classes have been discovered since 1987. - Answer-true
which cavity specifically refers to the space INSIDE the lungs - Answer-pulmonary
a young woman has just eaten a large order of heavily salted french fries, some pickled eggs and some cheese. How will consuming this much salt affect her physiology - Answer-there will be a temporary increase in blood volume
atrial natriuretic peptide is a hormone that is made by the atria of the heart. the influence
of this hormone is - Answer-reduces blood pressure and blood volume by inhibiting sodium and water retention
the maintenance of the proper pH of the body fluids may be the result of - Answer-the control of respiratory ventilation
which is true about angiotensin proteins - Answer-angiotensinogen is made into angiotensin I by renin
which of the following is NOT a function of the inflammatory response? - Answer-
replaces injured tissues with connective tissues
which are released by activated T cells and macrophages to mobilize immune cells and attract other leukocytes into the area - Answer-cytokines
the antibody released by plasma cells during the primary immune response is - Answer-
igM
_____ ultimately determine(s) what specific foreign substances our adaptive immune system will be able to recognize and resist - Answer-genes
select the correct statement about physical factors that influencing pulmonary ventilation
- Answer-as alveolar surface tension increases, additional muscle action will be required
dalton's law states that - Answer-in mixture of gases, each gas exerts its own partial pressure
select the statement about oxygen transport in blood - Answer-increased arterial pH enhances hemoglobin's oxygen-carrying capacity
what would happen if the kidney's capsular hydrostatic pressure were increased above normal? - Answer-net filtration would decrease
tubular reabsorption - Answer-by active mechanisms usually involves movement against an electrical and/or chemical gradient
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