Meow Meow Flashcards
Protein or amino acid based hormones typically exert their effects through factivation of intracellular________ in their target cells?
Second Messengers
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
Hypothalamic corticotropin-releasing hormone regulates
which of the following anterior pituitary hormones:
Adrenocorticotropic hormone
- Growth hormone (GH) is secreted into the bloodstream
and can be inhibited by
Anterior pituitary; hypothalamic growth hormone
inhibiting hormone
Hyposecretion of growth hormone in a child results in
which condition?
Pituitary dwarfism
- What is the correct sequence of organs and their
hormones released, that are needed for full activation of
thyroid hormone secretion?
KEY: -hypothalamus b-anterior pituitary c-posterior
pituitary -thyroid stimulating hormone e thyrotropin
releasing hormone
a. AEBD
A hypodermic injection of thyroid stimulating hormone
(TSH) would most likely:
Result in increased blood levels of thyroid hormones
Antidiuretic Hormone ______
Increases urine production
Glucocorticoids enable the body to deal appropriately
with long periods of stress. They accomplish this by:
Increasing blood glucose, fatty acid, and amino acid
levels and enhancing blood pressure
Which set of hormones represents a permissive effect
based on hormone interactions?
Epinephrine and thyroid hormones
The parathyroid glands maintain adequate levels of
blood calcium. HTis is accomplished through ___
Targeting the bone and activation of osteoclasts so
that the calcium will be released
The most important hormonal regulator of electrolyte
(sodium, Potassium) concentration in extracellular fluids is
Aldosterone
What organ in the body regulates erythrocyte
production through release of erythropoietin?
Kidney
Of the formed elements which is capable of
transporting oxygen or carbon dioxide
Erythrocyte
Which of the following is true about blood plasma?
Plasma is about 90% water
An individual who is blood type AB-:
Can receive RBC’s from any blood type in moderate
amounts, except with the Rh-antigen
Erythroblastosis fetalis occurs when:
Rh- mother has a Rh+ child
All of the following are true of RBC’s except:
Lifespan of 120 days
The heart lies in the ____ cavity
Ventral pericardial
Normal heart sounds are caused by which of the
following events?
Closure of the heart valves
The left ventricular wall if the heart is thicker than the
right to:
Pump blood with greater pressure
The mitral valve:
Is the atrioventricular valve with two flaps
Which measurement provides the most direct information
about valve function?
Phonocardiogram
- The P-wave (P->Q) of a normal electrocardiogram
indicates:
Atrial depolarization
The QRS complex:
Precedes ventricular contraction
Which is the correct sequence of events for an action
potential to transmit through the entire heart to stimulate
cardiac muscles sequentially?
Purkinje fibers, atrioventricular bundle atrioventricular
node, sinoatrial node
Which vessel of the heart receives blood during
ventricular systole (left/right)?
Aorta/pulmonary trunk
Hemorrhage with a large loss of blood immediately
(directly) causes:
A lowering of blood pressure due to the change in
cardiac output- less blood means less fluid volume,
which would cause a decrease in blood pressure
Which of the following statements is not one of the three
main factors influencing blood pressure?
Emotional state
Which statement best describes arteries?
All carry blood away from the heart
The primary functions of
are to permit the
exchange of nutrients and gases between the blood and tissue
cells
Capillaries
The outermost tissue layer of a blood vessel organ is the
Tunica externa
The circulatory route that runs from the digestive tract to
the liver is called
Hepatic portal circulation
Which of the following is likely during strenuous
exercise?
Capillaries of the active muscles will be filled with
blood- this increases the supply of blood to the
muscles
An obstruction in the superior vena cava, just inferior to
the brachiocephalic veins, would decrease the flow of:
Blood from the head neck and upper limbs to the
heart
A man is experiencing an infection in his nose. What
route do leukocytes take from the heart to get to the nasal
infection? (hint: this is a very similar route as to an eye
infection)
KEY: a-aorta, b-axillary artery, c-common cold, d-external
carotid artery, e-internal carotid artery, f-maxillary artery, g-
subclavian artery, h-brachiocephalic artery
A, h, c, e, f
Which organ is responsible for synthesizing atrial
natriuretic peptide (ANP)?
The heart
A child is receiving a saline-growth hormone solution
into the median cubital vein of her left arm. Which two veins
would next receive the hormone that will be transported
through her circulation.
Left basilic and cephalic veins
Blood pressure homeostasis is important for life. Which
mechanism(s) promote increased blood volume?
Conversion of angiotensinogen to angiotensin I, and
then angiotensin I to angiotensin II. Which results in
adrenal cortex releasing aldosterone
Which intrinsic mechanism helps vasodilation of arteries
in the systemic circulation?
Myogenic stretch of smooth muscles
