32. To function properly, a neuron must maintain a
a. membrane potential
b. neurotransmitter
c. negative charge on the inside
d. positive charge on the inside
I'm stuck between C and D...
34. Hormones are essential to maintaining homeostasis mainly because
a. they catalyze specific chemical reactions in brain cells
b. the body requires them for digesting food
c. they cause specific responses in specific cells
d. they act faster than nerve impulses
C?
35. Which of the following is TRUE?
a. It was recently discovered that the pituary gland doesn't actually do anything
b. The hypothalamus is responsible for controlling the activity of the pituary gland
c. The pituary gland controls the hypothalamus, which in turn controls the other glands
d. Hormones of the other endocrine glands of the body activate the pituary gland
Not sure...
Thanks
-MC
32. To determine the correct answer between C and D, we need to understand the basics of a neuron's functioning.
A neuron is a specialized cell in the nervous system that transmits electrical and chemical signals. It consists of various components, including a cell body, dendrites, and an axon. The membrane potential refers to the electrical charge difference across the neuron's cell membrane.
When a neuron is at rest or not actively transmitting signals, it maintains a negative charge on the inside relative to the outside. This resting membrane potential is crucial for the neuron's ability to generate and transmit electrical impulses. Therefore, the correct answer is c. negative charge on the inside.
34. Hormones are chemical messengers secreted by glands of the endocrine system. They play a vital role in maintaining homeostasis, which is the internal balance of the body's functions.
Option c states that hormones cause specific responses in specific cells. This answer aligns with the role of hormones in maintaining homeostasis. Hormones bind to specific receptors on target cells, initiating specific physiological responses to maintain balance.
Therefore, the correct answer is c. they cause specific responses in specific cells.
35. Let's evaluate each option to determine the correct answer:
a. It was recently discovered that the pituitary gland doesn't actually do anything. This option is not accurate because the pituitary gland has well-established functions in the endocrine system.
b. The hypothalamus is responsible for controlling the activity of the pituitary gland. This option is partially correct. The hypothalamus plays a crucial role in regulating the pituitary gland's activity by releasing hormones that control its secretion.
c. The pituitary gland controls the hypothalamus, which in turn controls the other glands. This option is not accurate. The hypothalamus controls the pituitary gland, and the pituitary gland, in turn, controls other endocrine glands.
d. Hormones of the other endocrine glands of the body activate the pituitary gland. This option is also incorrect. The pituitary gland is primarily controlled by the hypothalamus, not by hormones from other glands.
Based on the analysis, the correct answer is b. The hypothalamus is responsible for controlling the activity of the pituitary gland.