A&P: Exam 3

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The following are structural components of the conducting system of the heart. 1. Purkinje fibers 2. AV bundle 3. AV node 4. SA node 5. bundle branches

4, 3, 2, 5, 1

After brain surgery, a patient receiving postoperative care in an intensive care unit began to pass large volumes of very dilute urine. The ICU nurse administered a medicine to correct it, that mimics one of the following hormones. Which one?

ADH

Stroke volume depends on...

All of the above

In persons with untreated diabetes mellitus...

All of the answers are correct

When a person who lives at sea level vacations in the Rocky Mountains, you would expect...

All of the answers are correct

Which of the following is a function of the blood?

All of the answers are correct

Which of the following is a known effect of thyroid hormone on peripheral issues?

All of the answers are correct

Type II diabetes is characterized by...

a lack of response by target cells to insulin

Which gland is called the "emergency gland" and helps the body adjust to stress?

adrenal (suprarenal)

A condition characterized by a generalized thickening and toughness of arterial walls is...

arteriosclerosis

A fibrin network that contains trapped blood cells and platelets is called a...

blood clot

How do glucocorticoids enable the body to deal appropriately with stress?

by increasing blood glucose, fatty acid, and amino acid levels and enhancing blood pressure

Generally, the actions of hormones...

can produce complex changes in physical structure and physiological changes.

A moving blood clot is called an....

embolus

Tissue factor is a factor in the ____ pathway.

extrinsic

A hematocrit provides info on...

formed elements abundance

Pancreatic Alpha cells are to ____ as beta cells are to ____ .

glucagon; insulin

Diastolic pressure is the ____ pressure during ventricular _____.

minimum; diastole

During the alarm phase of the general adaptation syndrome (GAS), there is...

mobilization of energy reserves

Which of the following is an granular leukocyte?

monocyte

The function of platelets is to assist in the...

process called hemostasis

Following serious hemorrhage, the body maintains arterial blood volume by...

vasoconstriction of the venous system

The majority of the body's blood volume at one time is found within the...

veins

Blood circulates into the coronary arteries during...

ventricular relaxation

_____ is to contraction as _____ is to relaxation.

Both A and C

The two lobes of the pituitary gland together produce how many hormones?

9

Which of the following is a characteristic associated with a typical artery that would NOT be seen in a vein?

Internal and external elastic membrane

Which of the following elements is necessary for the production of thyroid hormone?

Iodine

Which of the following is a role of capillaries?

Permit diffusion between blood and interstitial fluids

Abnormally slow depolarization of the ventricles would most change the shape of the ____ in an ECG tracing.

QRS complex

Why is it that steroid hormones use receptors inside of target cells, where as protein, peptide, and amino acid hormones do not?

Steroids can cross the cell membrane because they are lipids and the membrane is lipid.

Which of the following is NOT an important functional aspect of the biconcave design of red blood cells?

Undergo cell division quickly and efficiently

During the isovolumetric phase of ventricular systole, the...

atrioventricular valves and semilunar valves are closed

The heart is innervated by ____ nerves

both parasympathetic and sympathetic

Parathyroid hormone does all of the following except...

build up bone

When the ventricles are relaxed the semilunar valves are ____ and the atrioventricular valves are ____ .

closed; open

The vessels that drain the heart muscle are called the...

coronary sinus.

Cardiac output can be increased by all of the following except one. Choose the exception.

decreasing ejection fraction

The veins of the systemic circuit carry...

deoxygenated blood to the heart

The adrenal medulla produces the hormones...

epinephrine and norepinephrine

The exhaustion phase of the general adaptation syndrome (GAS) is characterized by...

failure of electrolyte balance

After a steroid hormone binds to its receptor to form an active complex...

gene transcription is initiated

The coronary sulcus is a groove that...

marks the border between the atria and ventricles

Which of the following combinations may result in the hemolytic disease of the newborn?

mother Rh negative, baby Rh positive

The thickest layer of the heart is the...

myocardium

Hormone concentration levels are most commonly controlled by....

negative feedback

The most numerous WBCs in a differential count of a healthy individual are...

neutrophils

Kirk has type AB blood. Which blood type would cause agglutination or cross reaction with his blood?

no blood types would agglutinate Kirk's blood.

The heart, in response to high blood volume, releases...

ANP

If the normal pacemaker of the heart fails, the job will be taken over by the...

AV node

The first heart sound is heard when the....

AV valves close

Which recommendation might be given by a doctor when counseling a patent who is suffering form excessive melatonin production?

All of these recommendations might be made.

Which of the following is a TRUE statement?

Anti- Rh antibodies are present only upon sensitization but anti-A and anti-B are present throughout a person's lifetime

The hormone that does the opposite of calcitonin is...

parathyroid hormone

The circuit that begins at the right ventricle and ends at the left atrium is the ______ circuit.

pulmonary

All the circulating red blood cells in an adult originate in the...

red bone marrow

Endocrine cells...

release their secretions directly into body fluids such as blood

Which of the following will NOT decrease venous return?

skeletal muscle contraction

An intercalated disc is a...

specialized cardiac muscle intercellular connection.

Analysis of the electrocardiogram can reveal all of the following, except the....

stroke volume

The base of the heart is the portion that is most...

superior

The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on______.

the presence of the appropriate receptors on the cells of the target tissue or organ

Which feature of WBCs makes them particularly important in tissue injury?

they can squeeze out through blood vessel walls into tissues

Blood flowing into the heart from the venue cave flows next through the _____ valve.

tricuspid

Vasoconstriction is accomplished by the...

tunica media


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