Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Question
Chapter 26, Problem 2MCQ
Summary Introduction
Introduction:
A neuron is a basic functional unit of nervous system. The human brain consist many billion neurons. Neurons are the specialized cells of nervous system that makes a complex network for the transmission of messages.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What is myelin?
A. Projection on a neuron cell body that is sensitive to stimuli
B. Another name for the cell body of a neuron
C. A membrane wrapping on an axon that increases the speed of action potential propogation
D. A long, slender process of a neuron that is capable of conducting nerve impulses
To which part or parts of a neuron does the all-or-none law apply? a. Axons b. Dendrites c. Both axons and dendrites
Lidocaine is an anesthetic that is used to prevent the propagation of action potentials. Which compartment would lidocaine MOST likely target?
A. axon
B. dendrite
C. soma
D. synaptic cleft
Chapter 26 Solutions
Biology: Concepts and Investigations
Ch. 26.1 - Prob. 1MCCh. 26.1 - Prob. 2MCCh. 26.1 - Prob. 3MCCh. 26.2 - Prob. 1MCCh. 26.2 - Where is the myelin sheath located?Ch. 26.2 - Prob. 3MCCh. 26.2 - What are the functions of each of the three...Ch. 26.3 - Describe the forces that maintain the distribution...Ch. 26.3 - Prob. 2MCCh. 26.3 - Prob. 3MC
Ch. 26.3 - Prob. 4MCCh. 26.3 - What prevents action potentials from spreading in...Ch. 26.3 - Prob. 6MCCh. 26.3 - How do myelin and the nodes of Ranvier speed...Ch. 26.4 - Describe the structure of a synapse.Ch. 26.4 - Prob. 2MCCh. 26.4 - Prob. 3MCCh. 26.4 - Prob. 4MCCh. 26.5 - Prob. 1MCCh. 26.5 - Prob. 2MCCh. 26.5 - Prob. 3MCCh. 26.5 - Prob. 4MCCh. 26.6 - Prob. 1MCCh. 26.6 - Prob. 2MCCh. 26.6 - Prob. 3MCCh. 26.6 - List some structures that protect the central...Ch. 26.6 - Prob. 5MCCh. 26.7 - The researchers conducted a behavioral experiment...Ch. 26.7 - Prob. 2MCCh. 26 - Some cells of the central nervous system are...Ch. 26 - Prob. 2MCQCh. 26 - What event triggers an action potential? a....Ch. 26 - Prob. 4MCQCh. 26 - Prob. 5MCQCh. 26 - Prob. 6MCQCh. 26 - Prob. 7MCQCh. 26 - Damage to the surface tissue of the spinal cord...Ch. 26 - Prob. 9MCQCh. 26 - Describe some invertebrate nervous systems. Why do...Ch. 26 - Prob. 2WIOCh. 26 - Prob. 3WIOCh. 26 - Prob. 4WIOCh. 26 - What is the connection between the threshold...Ch. 26 - Write a nonbiological analogy for resting...Ch. 26 - Prob. 7WIOCh. 26 - Sketch a synapse: label the axon and synaptic...Ch. 26 - Describe the events that occur at a synapse when a...Ch. 26 - Prob. 10WIOCh. 26 - Prob. 11WIOCh. 26 - Cerebral palsy is a nervous system disorder that...Ch. 26 - Traumatic brain injury can occur when a person...Ch. 26 - Prob. 14WIOCh. 26 - Prob. 15WIOCh. 26 - Prob. 16WIOCh. 26 - Prob. 1PITCh. 26 - Prob. 2PITCh. 26 - PULL IT TOGETHER 4. Acid the somatic, autonomic,...
Knowledge Booster
Similar questions
- Which part of a neuron transmits an electrical signal to a target cell? Choose one answer. a. dendrites b. cell body С. ахоп d. somaarrow_forwardName the structure that the arrow is pointing at?A. DendriteB. Axon hillock C. Cell bodyD. Synaptic snobE. Node of ranvierarrow_forwardIn discussing nuerites, neurons typically have one __, but many ___. A. Axon; dendrites B. Dendrites;axons C. Cell body; axons D. Dendrites; cell bodiesarrow_forward
- The nerve impulses always travel in one direction from dendrites to axon terminals. What prevents an action potential from travelling backward? a. Hyperpolarization of the neuron makes the membrane more positive and prevents another action potential. b. After repolarization, the refractory period occurs, where the sodium ions are found outside the cell. c. After repolarization, the reversal of ions prevents another action potential as there would not be enough sodium ions outside the cell to rush in. d. The refractory period prevents another action potential by lowering the threshold potential.arrow_forwardWhich is the correct order of the firing of a neuron? a. resting potential, threshold, action potential, refractory period b. resting potential, threshold, refractory period, action potential c. action potential, resting potential, refractory period, threshold d. threshold, resting potential, refractory period, action potentialarrow_forwardA neuron without an axon would be unable to a. conduct nerve impulses b. divide c. receive stimulation from other neurons d. store genetic materialarrow_forward
- A neuron may receive signals from thousands of synaptic terminals. What determines whether the receiving neuron will respond by transmitting a signal? a. the concentration of transmitter inside the receiving neuron b. the summation of excitatory and inhibitory signals received c. the number of glial cells contact the receiving neuronarrow_forwardWhere does collateral sprouting take place? a. In the cell body b. In the axon c. In the dendrites d. In both the axons and the dendritesarrow_forward33) What part of a neuron is responsible for receiving information?a. Axon.b. Node of Ranvier.c. Dendrite.d. Myelin sheath.arrow_forward
- A stimulus causes a change in permeability of neural membranes, which begins the process of transmitting an impulse. If the stimulus reaches the threshold potential of a neuron, an action potential is generated. Select the numbers of the statements below that occur once the threshold potential is reached. 1. Sodium ions flow into the neuron. 2. Sodium ions flow out of the neuron. 3. The membrane potential becomes positive. 4. The membrane potential becomes negative. 5. Voltage-gated potassium channels open. 6. Voltage-gated potassium channels close. 7. Potassium ions flow into the neuron. 8. Potassium ions flow out of the neuron. Place the numbers in order from the first event to the last event: andarrow_forwardMatch the description with the statement that best describes the following regions dendrites A. elongated projection that conducts electrical signals over long distances B. receives input from other neurons axon hillock C. "region of high denisty of voltage-gated channels, known as the trigger zone" ахon D. contains numerous vesicles containing neurotransmitter synaptic knobarrow_forwardWhat characteristic distinguishes dendrites from axons?a. Presence of branches at the tipsb. Direction of impulse transmission relative to cell bodyc. Whether they direct impulses toward or away from the braind. Presence of sodium channels in the cell membranearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
