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WorksheetsA&P Exam 4 Review FA25
Total questions: 60
Worksheet time: 30mins
What is the largest diameter artery in the body?
Smooth muscle cells that regulate blood flow from the thoroughfare channel into capillaries are called this:
Blood going to the lungs through the pulmonary arteries contains a high concentration of ______ and a low concentration of ______.
nitrogen, oxygen
carbon dioxide, oxygen
Venous return would be increased by this:
Decreased heart rate
Contraction of skeletal muscles
Dilation of blood vessels
Strong connective tissue strings that are attached to papillary muscles and to the cusps of the atrioventricular valves are called this:
Given these valves:
1. aortic semilunar valve
2. bicuspid (mitral) valve
3. pulmonary semilunar valve
4. tricuspid valve
Arrange them in the order in which an erythrocyte would pass through them after returning to the heart from the left arm
Damage to cells of the AV bundle would prevent the cardiac impulse from reaching this:
Given these structures of the conduction system of the heart:
1. atrioventricular bundle (Bundle of His)
2. AV node
3. bundle branches
4. Purkinje fibers
5. SA node
Choose the arrangement that lists the structures in the order an action potential passes through them.
In an EKG, the P wave represents this:
Cardiac output is defined as this:
The following statements about erythrocytes are true except:
are biconcave disks
transport most of the oxygen in the blood
transport most of the carbon dioxide in the blood
are the most numerous formed elements
Low blood oxygen levels increase the formation of erythropoietin by the kidneys which stimulates red blood cell production.
True
False
White blood cells make-up what part of centrifuged blood
Agglutination, which occurs during transfusion reactions, is caused by binding between these:
According to Boyle’s law, as volume increases, pressure increases and as volume decreases, pressure decreases.
This best describes the function of surfactant:
For inspiration during labored breathing, these muscles are NOT contracted
external intercostal muscles
diaphragm
internal intercostal muscles
sternocleidomastoid muscles
What does the oxyhemoglobin curve tell us?
At what structure in the lungs does gas exchange occur?
What drives gas exchange in the body?
What is the main function of white blood cells?
Which of the following is a function of platelets?
Transport oxygen
Fight infections
Clot blood
Regulate body temperature
What is the primary function of the SA node in the heart?
Initiate the heartbeat
Pump blood to the lungs
Regulate blood pressure
Filter blood
What is the primary function of red blood cells?
Transport oxygen
Fight infections
Clot blood
Regulate body temperature
Which part of the heart is responsible for pumping oxygenated blood to the body?
Right atrium
Left atrium
Right ventricle
Left ventricle
What is the main function of hemoglobin in red blood cells?
Transport carbon dioxide
Transport oxygen
Fight infections
Clot blood
The popliteal vein is found:
Behind the knee
In the groin area
In the upper arm
In the abdomen
Which blood vessel carries deoxygenated blood from the heart to the lungs?
Aorta
Pulmonary vein
Pulmonary artery
Vena cava
The purpose of the heart valves is to
pump the blood to the lungs.
pump the blood to the body.
prevent blood from backflowing/going in the wrong direction.
pump the blood to the ventricles.
pump the blood to the ventricles.
If you were to insert your finger into the superior vena cava, you would be feeling inside which chamber?
right atrium
left atrium
left ventricle
right ventricle
1. What is the correct formula for calculating minute ventilation?
If you inserted a probe into the aorta, which chamber of the heart would it lead to?
left ventricle
right ventricle
left atrium
right atrium
The middle portion of a centrifuged blood sample is known as the ___________
What is the dome-shaped muscle that contracts during inhalation?
Which of the following changes would most likely increase minute ventilation?
Reducing respiratory rate and tidal volume
Where is the radial artery most commonly palpated?
The carotid artery is located:
The left ventricle contains:
Oxygen poor blood
Oxygen rich blood
Which of the following best describes the difference between a thrombus and an embolus?
A thrombus forms in the lungs; an embolus forms in the heart
A thrombus is solid; an embolus is liquid
A thrombus is stationary; an embolus is mobile
There is no difference
Which of the following represents the amount of air inhaled or exhaled during a normal breath?
Which valves are open during ventricular ejection?
AV valves
Semilunar valves
Both AV and semilunar valves
All valves are closed
Which structure is commonly known as the "voice box"?
The trachea divides into two:
What is the primary danger of carbon monoxide (CO) to the human body?
It destroys red blood cells
It causes lung tissue scarring
It prevents oxygen from binding to hemoglobin
It increases blood pH
Which type of WBC is most abundant in a normal blood sample?
During ventricular systole, what happens to the AV valves?
What happens to ventricular pressure during isovolumetric contraction?
What is the main role of monocytes?
Produce histamine
Attack parasites
Become macrophages and engulf pathogens
Produce antibodies
At a PO₂ of 100 mmHg (normal lungs), hemoglobin is about:
50% saturated
98-100% saturated
If a person has type AB blood, which antibodies are present in their plasma?
Anti-A and anti-B antibodies
Anti-A antibody
Anti-B antibody
No anti-A or anti-B antibodies
What happens when a person with type A blood receives type B blood?
No reaction occurs
Agglutination occurs due to anti-B antibodies
Agglutination occurs due to anti-A antibodies
The person will develop hemolysis without agglutination
Which of the following describes the function of platelets in hemostasis?
To break down fibrin clots
To release clotting factors and form a plug
To carry oxygen to the tissues
To dissolve damaged blood vessels
The average total blood volume in an adult human is approximately:
3 liters
7 liters
5 liters
The process of gas diffusion in the body refers to the movement of gases from regions of:
High pressure to low pressure
Low concentration to high concentration
High temperature to low temperature
Low pressure to high pressure
The diffusion of oxygen from the alveoli to the blood occurs because the partial pressure of oxygen is higher in the alveoli than in the:
Which of the following is NOT a characteristic of cardiac muscle cells?
How is most carbon dioxide transported in the blood?
The pleural cavity surrounds the...
Which of the following structures is for food and air?
What blood vessels supplies blood to the adrenal glands?
Superior suprarenal arteries
Pulmonary arteries
Hepatic arteries
Renal arteries
