A&P 2 Midterm Pt. 2
How many antigen-binding sites for antigens does each IgG antibody possess on its V regions?
2
What makes lymphatic vessels similar to the venous circuit of the cardiovascular system?
Both vessels have valves
Why is heparin used in a capillary tube when performing a hematocrit?
Heparin prevents the cells from coagulating.
Which component of the ECG represents the start of the T deflection to return to isoelectric line?
T wave
How is the base of the heart different from the apex of the heart?
The great vessels are located on the base.
Why are olfactory and gustatory receptors categorized as chemoreceptors?
They detect chemicals dissolved in either saliva or mucus.
Which of the following is TRUE of veins?
Veins have thinner walls than arteries
Madison wants to give a kidney to her older sister. What type of organ transplant will this be?
allograft
Which hormones work synergistically to retain water?
antidiuretic hormone (ADH) and aldosterone
Where are sound vibrations amplified?
auditory ossicles
Which leukocyte becomes a mast cell when it movies into connective tissue?
basophil
How do cardiac cells sustain a membrane potential of around 0 mV during the long plateau phase?
calcium channels remain open
What does the basilar artery branch into next?
cerebral arterial circle
Epinephrine is produced by:
chromaffin cells of adrenal medulla
If there is a drop of blood in the descending abdominal aorta, which vessel would it enter NEXT if it is going to the tibialis anterior muscle?
common iliac artery
What two values are needed to calculate mean arterial pressure (MAP)?
diastolic pressure and systolic pressure
The process of red blood cell production is known as:
erythropoiesis
The anterior and posterior tibial veins merge to form the:
femoral veins
What structure in the fetus allows blood to directly flow from the right atrium to the left atrium?
foramen ovale
Bilirubin comes from the breakdown of:
heme molecules of hemoglobin that lack iron.
What might accompany an overdose of insulin?
hypoglycemia
What type of plasma protein are antibodies?
immune protein
What surface groove separates the right and left ventricles?
interventricular sulcus
Which chamber experiences a maximum pressure of around 118 mm Hg during contraction?
left ventricle
Platelets are cell fragments formed from:
megakaryocytes
Which leukocyte is a granulocyte?
neutrophil
What cells play an extensive role in the eradication of bacteria as phagocytes?
neutrophils
Jerry is an alcoholic and does not eat enough food. He has been diagnosed with a vitamin deficiency. What blood disorder is the most likely a result of this deficiency?
pernicious anemia
The right lymphatic duct receives lymph from the:
right arm
Special senses, such as sight and sound, are detected by:
special cells that transduce stimuli into electrical signals.
What type of hormone is made from cholesterol?
steroid hormone
Which artery supplies the small intestine with blood?
superior mesenteric artery
What does the phrenic artery do?
supplies the superior diaphragm
Where does the conscious awareness of sound begin, along with the analysis of its pitch, location, and loudness?
temporal lobe
As a result of the long refractory period in the contractile cell refractory period, cardiac muscle can NOT exhibit:
tetany
When a photoreceptor cell is stimulated by light:
the photoreceptor hyperpolarizes as sodium ion channels close.
Which blood vessel tunic is innervated by nerves from the sympathetic nervous system?
tunica media
The inability to recognize a family member indicates impairment in the:
ventral pathway