Question 1

Which of the following best describes negative feedback in the context of human physiology?

Accepted Answer

A process where the response counteracts the original stimulus, maintaining homeostasis.

Question 2

A patient is experiencing high blood glucose levels. The pancreas releases insulin, which lowers blood glucose back to normal. What type of feedback loop is this an example of?

Accepted Answer

Negative feedback

Question 3

Which of the following is a correct sequence for the transmission of a nerve impulse?

Accepted Answer

Dendrite → Cell body → Axon → Axon terminal

Question 4

Which part of the brain is primarily responsible for balance and coordination?

Accepted Answer

Cerebellum

Question 5

Steroid hormones differ from nonsteroid hormones in that steroid hormones:

Accepted Answer

Are lipid-soluble and can pass through the cell membrane to bind intracellular receptors.

Question 6

Which of the following best describes the role of the myelin sheath in neurons?

Accepted Answer

It insulates the axon, increasing the speed of nerve impulse transmission.

Question 7

A person touches a hot stove and quickly pulls their hand away before feeling pain. Which pathway is primarily responsible for this rapid response?

Accepted Answer

Somatic nervous system

Question 8

Which lobe of the cerebrum is most involved in processing visual information?

Accepted Answer

Occipital lobe

Question 9

Which of the following best describes the function of interneurons?

Accepted Answer

They connect sensory and motor neurons within the central nervous system.

Question 10

During an action potential, which of the following occurs first?

Accepted Answer

Sodium ions flow into the neuron.

Question 11

Which division of the peripheral nervous system is responsible for involuntary control of internal organs?

Accepted Answer

Autonomic nervous system

Question 12

A woman is giving birth and the hormone oxytocin is released, causing stronger uterine contractions, which in turn cause more oxytocin to be released. This is an example of:

Accepted Answer

Positive feedback

Question 13

Which of the following best describes the role of the brain stem?

Accepted Answer

Regulating basic life functions such as breathing and heart rate

Question 14

Which of the following is a function of the sympathetic nervous system?

Accepted Answer

Increasing heart rate and preparing the body for 'fight or flight'

Question 15

Which of the following best describes the difference between the central nervous system (CNS) and the peripheral nervous system (PNS)?

Accepted Answer

The CNS includes the brain and spinal cord, while the PNS includes all other neural tissue.

Question 16

Which of the following is true about nonsteroid hormones?

Accepted Answer

They bind to receptors on the cell surface and activate second messenger systems.

Question 17

A person is startled by a loud noise, causing their heart rate to increase and pupils to dilate. Which division of the nervous system is primarily responsible for this response?

Accepted Answer

Sympathetic nervous system

Question 18

Which of the following best describes homeostasis?

Accepted Answer

The process by which organisms maintain a stable internal environment.

Question 19

Which of the following is the correct formula for the resting membrane potential of a neuron?

Accepted Answer

$$V_{rest} = -70\ \mathrm{mV}$$

Question 20

Which of the following best describes the function of the parietal lobe?

Accepted Answer

Processing sensory information such as touch, temperature, and pain

Feedback Loops, Endocrine System, and Nervous System: Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards