Streets) exam questions and
answers 2025
What is the function of a baroreceptor? - Ans Monitoring changes
in arterial pressure
The limbic system, a portion of the cerebrum and diencephalon,
contains structures that: - Ans Influence emotions and mood.
In the bloodstream, ________ reacts with the plasma protein
angiotensinogen to form angiotensin - Ans renin
What hormone is secreted in response to a decrease in the
sodium level or an increase in the potassium level? - Ans
Aldosterone
What is the cardiac output of a person with a stroke volume of
60mL and a heart rate of 90 beats/minute? - Ans 5.4L
Normal inhalation is the result of - Ans negative pressure in the
thoracic cavity
All of the following are facial bones EXCEPT: maxilla, parietal,
palatine, lacrimal - Ans Parietal
,Blood enters the right atrium of the heart from the - Ans vena
cavae and coronary sinus
A specialized part of the venous system that filters the blood and
metabolizes various drugs is called the: - Ans hepatic portal
system
Which of the following structures comprise the axial skeleton? -
Ans Skull, face, thoracic cage, vertebral column
The two major veins that drain the head and neck of blood are
the: - Ans jugular veins
Which layer of the heart would be penetrated during an emergent
medical procedure in order to remove fluid? - Ans pericardium
The Broca region of the left frontal lobe is responsible for the
muscular actions that are associated with: - Ans speech
The S2 heart sound represents: - Ans closure of the semilunar
valves
The average total body water content of a healthy adult is
approximately ____% of his or her body weight. - Ans 60
The left main coronary artery rapidly divides into the: - Ans Left
anterior descending and circumflex arteries
, What is a function of the lymphatic system? - Ans Filtration of
debris and bacteria from the blood
Freshly oxygenated blood is returned to the left atrium through
the: - Ans Pulmonary veins
Efferent nerves of the peripheral nervous system are responsible
for: - Ans carrying commands from the brain to the muscles
The pulmonary circulation is responsible for: - Ans ensuring that
blood gets reoxygenated.
Molecules that bind to a receptor's cells and trigger a response by
that cell, thereby resulting in some kind of action or biologic
effect, are called: - Ans agonists
During an acidotic state, the kidneys attempt to maintain a
normal pH by: - Ans retaining bicarbonate
The thick fibrous membrane that surrounds the heart is called
the: - Ans pericardium
The metabolic breakdown of stored carbohydrates, fats, or
proteins in order to provide energy is called: - Ans catabolism
The ilium is defined as the: - Ans bony prominences of the pelvis