Bio Unit 3
During respiration in fish, what percentage of dissolved oxygen is absorbed?
80-90%
Pulmonary arteries take
O2-poor blood to the lungs.
What is the first step in the formation of a blood clot?
The platelets form a plug.
Which of the following is not true about platelets?
They phagocytize pathogens.
Because of the nature of platelets, having a low platelet count can be cause for concern if which of the following were to occur?
a deep cut
You are a doctor and an individual comes into your office. During the routine exam, you listen to the patient's heart sounds and notice that the first heart sound or "lub" is not as sharp or crisp as it should be. Your diagnosis of the patient's condition is
a heart murmur
The functional unit of the lungs where gas exchange occurs is the
alveolus.
If the sinoatrial node fails in the heart,
an artificial pacemaker can correct the problem
Increasing the size of the thoracic cavity through contraction of the diaphragm and rib muscles causes
an inhalation.
Most carbon dioxide is carried in the blood
as bicarbonate ion formed from carbonic acid in the plasma.
In hemodialysis, wastes normally collected by the kidney
diffuse through artificial or natural semipermeable membranes.
The mechanism by which oxygen moves into capillaries from alveoli is
diffusion
A neutrophil
fights disease.
Which organism has an open circulatory system?
grasshopper
Hair within the nose and cilia lining the respiratory tract
prevent particles from entering the lungs.
Which of the following is the correct path urine follows from internal structures to outside the body?
renal pelvis - ureter - urinary bladder - urethra
Neutrophils and monocytes are similar in that they both
result in phagocytized pathogens.
A genetic defect causes the distal tubules of nephrons to malfunction. Which of the following may not occur during urine formation?
secretion of larger molecules which may be toxic
A four-chambered heart, veins, arteries, and capillaries are found in
some closed circulatory systems.
It is important for sodium and chloride ions to be reabsorbed in the nephron so that
some water will be reabsorbed through osmosis.
