A&P: Exam 3
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
