Nokea
Which of the following are tropic hormones? (Select one that doesn't apply.)
- A. Somatotropin
- B. Follicle-stimulating hormone
- C. Antidiuretic hormone
- D. Thyroid-stimulating hormone
Correct Answer: C
Rationale: Tropic hormones are hormones that stimulate other endocrine glands to release their hormones. Antidiuretic hormone (C) is not a tropic hormone; it acts on the kidneys to regulate water balance. Somatotropin (A), follicle-stimulating hormone (B), and thyroid-stimulating hormone (D) are all tropic hormones that stimulate the release of hormones from other glands.
You may also like to solve these questions
When assessing a female patient who describes herself as a strict vegetarian, the nurse notes that she has a yellow tone to her skin. The nurse should ask the client if she has eaten large amounts of which foods?
- A. Carrots and squash.
- B. Turnips and beets.
- C. Rice and eggs.
- D. Spinach and mustard greens.
Correct Answer: A
Rationale:
Which structure of the nervous system carries action potentials in the direction of a synapse?
- A. cell body
- B. axon
- C. neuron
- D. myelin
Correct Answer: B
Rationale: The correct answer is the axon. The axon is a long, slender projection of a neuron that carries nerve impulses away from the cell body towards other neurons, muscles, or glands. Action potentials travel along the axon to the axon terminals where they lead to the release of neurotransmitters at the synapse, allowing communication with other neurons or target cells. The cell body contains the nucleus and organelles of the neuron but does not transmit action potentials. Neurons are the functional unit of the nervous system composed of the cell body, dendrites, and axon. Myelin is a fatty substance that surrounds and insulates axons, helping to speed up the transmission of nerve impulses but does not carry action potentials towards the synapse.
Which type of cholesterol is considered to be the healthiest?
- A. LDL
- B. HDL
- C. VLDL
- D. VHDL
Correct Answer: B
Rationale: High-Density Lipoprotein (HDL) cholesterol is considered the healthiest type of cholesterol because it helps remove LDL cholesterol from the arteries, reducing the risk of heart disease. HDL acts as a scavenger, carrying cholesterol away from the arteries to the liver where it can be processed and eliminated from the body. Having high levels of HDL cholesterol is associated with a lower risk of cardiovascular diseases.
What force primarily drives filtration in the kidneys?
- A. osmosis
- B. smooth muscle contraction
- C. peristalsis
- D. blood pressure
Correct Answer: D
Rationale: Filtration in the kidneys is primarily driven by blood pressure. The glomerulus filters blood under pressure, allowing small molecules and fluids to pass through into the renal tubules while retaining larger molecules like proteins. Osmosis, smooth muscle contraction, and peristalsis do play roles in kidney function, but blood pressure is the main force responsible for the initial filtration process.
Which structure regulates the transport of substances in and out of the cell?
- A. Cell membrane
- B. Cell's cytoplasm
- C. Nuclear membrane
- D. Plasma membrane
Correct Answer: D
Rationale: The plasma membrane, also known as the cell membrane, is responsible for regulating the transport of substances in and out of the cell. It acts as a selective barrier, allowing certain molecules to pass through while blocking others. The cytoplasm is the fluid within the cell, and the nuclear membrane surrounds the nucleus, not involved in regulating substance transport. Therefore, the correct answer is the plasma membrane.