What roles do the kidneys play in blood pressure maintenance? Include the following in your answer : urine, Na+, renin, angiotensin II, blood volume, osmotic pressure, and aldosterone
What will be an ideal response?
When blood pressure is too low, the kidneys secrete renin, which initiates chemical reactions that ultimately lead to the formation of angiotensin II. The angiotensin II causes the release of aldosterone from the adrenal gland and this hormone causes the kidney to conserve Na+ ions. By putting more filtered Na+ into the blood, the kidneys prevent a decrease in blood osmotic pressure, which causes more water to stay in the blood. This prevents a drop in blood volume and pressure. When blood pressure is too high, the kidneys can excrete more water into the urine, which causes a decrease in blood volume and pressure.
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The cranial nerves and spinal nerves make up the __________ ________ system
Fill in the blank(s) with correct word
The human brain is the consistency of tofu and typically weighs about eleven pounds
a. True b. False Indicate whether the statement is true or false
Radioactive materials and X-rays can cause ____________________ in DNA by disrupting exact copying of the nucleotide sequence
Fill in the blank(s) with correct word
Which of the following statements regarding the hypothalamus is correct?
A) The hypothalamus works in conjunction with the subthalamus and regulates motor functions of the body. B) The hypothalamus is located in the inferior portion of the diencephalon and influences body movement in response to fear. C) The hypothalamus is located between the brainstem and cerebrum and is solely responsible for maintaining body temperature. D) The hypothalamus is the most inferior portion of the diencephalon and controls functions such as hunger, sleep, and vomiting.