anatomy
The normal resting stroke volume is _______
70ml
Which blood type contains the A antigen only
A
Which of the following increases heart rate?
Epinephrine
What two groups of steroid hormones are made by female ovaries?
Estrogens and progesterone
What multinucleate cell gives rise to thousands of anucleate fragments known as platelets?
Megakaryocyte
Which vessels return oxygen-rich blood to the left atrium of the heart
Pulmonary veins
What is the primary effect of prolactin
Stimulate and maintain milk production after childbirth
What can we infer from the following: 110/70 mm Hg?
Systolic pressure measurement over diastolic pressure measurement
Which of these hormones regulate calcium levels in the body
calcitonin and parathyroid hormone (PTH)
Being lipid soluble, steroids can do all the following except ________
catalyze a reaction that produces cyclic AMP (cAMP)
What is the final step of hemostasis in which the formation of a blood clot is accomplished?
coagulation
Select the statement that best describes the function of tropic hormones
Tropic hormones stimulate other endocrine glands to secrete hormones
The "fight-or-flight" response triggers the release of ________
adrenaline/epinephrine
Releasing and inhibiting hormones produced by the hypothalamus influence the activities ofthe ________
anterior pituitary gland
The path of blood flow within the systemic vascular system is _____
arteries, arterioles, capillary beds, venules, veins
the atrioventricular valves are closed when ________.
atrial pressure is less than ventricular pressure
The two major groups of white blood cells are ______
granulocytes and agranulocytes
Cardiac output is the product of which two variables
heart rate and stroke volume
What is not contained in the plasma of blood
hemoglobin
Rising blood levels of aldosterone cause the kidney tubules to ________
increase absorption of sodium ions
Alcohol inhibits the secretion of antidiuretic hormone (ADH). What impact will this have onthe body?
increased thirst and dehydration
the friction blood encounters as it flows through the vessels is called ________
peripheral resistance
In the second-messenger system, what serves as the first messenger?
the hormone
The body's major metabolic hormone, which is actually two iodine-containing hormones, iscalled ________.
thyroid hormone
When the right ventricle contracts, which specific valve closes to prevent blood from flowinginto the right atrium?
tricuspid valve
The pulmonary semilunar valve is normally open during ____
ventricular systole
Which of these anterior pituitary hormones regulates the endocrine activity of the cortexregion of the adrenal gland?
Adrenocorticotropic hormone (ACTH)
Which of the following does not correctly characterize blood
Blood is cooler than body temperature
Which blood type(s) can a person with blood type O receive?
Blood type O
What component of a red blood cell binds and transports oxygen
Hemoglobin
What stimulates the release of calcitonin?
Increasing level of blood calcium ions
Which of the following vessels has the lowest blood pressure?
Venae cavae
What structure divides the left ventricle from the right ventricle?
interventricular septum
Erythrocytes ________.
lack a nucleus and most organelles
Pulmonary circulation involves blood flow to and from the heart and the ______
lungs
the pineal gland produces _______
melatonin
Rising levels of parathyroid hormone (PTH) will inhibit its further hormone release. This typeof control mechanism is best described as
negative feedback mechanism
The most numerous of the white blood cells are the
neutrophils
While cross matching an unknown blood type, agglutination was observed with neither theanti-A nor the anti-B sera. You evaluate these results to indicate that the unknown blood contains________
no antigens
Veins ________.
often have valves to prevent the backflow of blood