A sensory signal traveling from a receptor toward the central nervous system follows an afferent pathway. True or false?
5 The Nervous System Online Quiz Questions
Use this free practice quiz with 20 questions to review 5 The Nervous System, test your knowledge, and prepare for your next test or exam.
A neuron is receiving many incoming signals from other cells. Which part is specialized for receiving those signals?
- A
The axon
- B
The dendrites
- C
The cell body
- D
The myelin
Which CNS glial cell type provides immune defense in nervous tissue?
- A
Astrocytes
- B
Ependymal cells
- C
Microglia
- D
Oligodendrocytes
Which PNS glial cells support neuron cell bodies in ganglia?
What is a bundle of axons in the peripheral nervous system called?
An axon communicates with another cell at a junction called a .
Which of the following are examples of stimuli that receptors can detect? Select all that apply.
- A
Pressure
- B
A motor command
- C
Temperature
- D
Light
- E
A change inside the body
Which effectors are regulated by the autonomic motor system? Select all that apply.
- A
Smooth muscle
- B
Cardiac muscle
- C
Skeletal muscle
- D
Glands
An oligodendrocyte can myelinate portions of ; a Schwann cell typically myelinates .
A motor command is sent to a skeletal muscle. Which functional motor division controls that muscle?
- A
Sensory pathways
- B
The autonomic motor system
- C
The somatic motor system
- D
Interneurons
When a person touches a hot surface, a spinal withdrawal reflex can begin before the brain has fully processed the sensation. True or false?
- A
True
- B
False
A neuron has an axon wrapped in myelin. What is the primary benefit of this covering described in the material?
- A
It converts stimuli into nerve signals.
- B
It insulates axons and helps signals travel quickly.
- C
It integrates sensory information in the CNS.
- D
It forms junctions between neurons.
A person steps on a sharp object and quickly lifts a foot. Describe how information can travel from detecting the stimulus to producing this movement. Include the roles of the receptor, sensory and motor pathways, CNS, effector, and the motor division that controls the effector.
Which glial cell type lines fluid-filled spaces in the brain and spinal cord?
Which glial cell type helps regulate the chemical environment around neurons in the CNS?
- A
Astrocytes
- B
Schwann cells
- C
Microglia
- D
Satellite cells
At which neuron structure are chemical messengers called neurotransmitters often released to communicate with other cells?
- A
Dendrites
- B
Ganglia
- C
Synapses
- D
Myelin
Which statement correctly distinguishes a ganglion from a nerve in the PNS?
- A
A ganglion is a cluster of neuron cell bodies; a nerve is a bundle of axons.
- B
A ganglion is a bundle of axons; a nerve is a cluster of neuron cell bodies.
- C
A ganglion is part of the CNS; a nerve is part of the brain.
- D
A ganglion is a bundle of glial cells; a nerve is a bundle of dendrites.
A motor command is being sent to a skeletal muscle. Which functional motor division controls that target?
- A
Sensory (afferent) pathways
- B
Autonomic motor system
- C
Interneurons
- D
Somatic motor system
A withdrawal reflex can begin before the brain has fully processed the sensation, even though information also travels to the brain.
- A
True
- B
False
What is the term for a neuron type that connects and coordinates signals within the CNS?