Nervous System Quiz

Questions and Answers

Which cranial nerve is responsible for transmitting visual information?

Cranial Nerve II (correct)

Cranial Nerve V

Cranial Nerve X

Cranial Nerve VIII

Which division of the nervous system is responsible for controlling involuntary bodily functions?

Somatic nervous system

Autonomic nervous system (correct)

Central nervous system

Peripheral nervous system

What type of neural cells provides support and nourishment to the central nervous system?

Microglia

Astrocytes (correct)

Oligodendrocytes

Schwann cells

Which type of neuron has an uninterrupted axon?

Unipolar neuron Signup and view all the answers

What type of neural cell in the peripheral nervous system is responsible for the myelin sheaths?

Schwann cells Signup and view all the answers

Which organelle of the neuron is responsible for the production of neurotransmitters?

Golgi Apparatus Signup and view all the answers

A patient has experienced a stroke. Which part of the nervous system is most likely affected?

Central nervous system Signup and view all the answers

What can the postsynaptic membrane be?

All of the above Signup and view all the answers

What type of neuron will increase in number?

multipolar neuron Signup and view all the answers

What is the effect of acetylcholine in the synapse?

The muscle contracts Signup and view all the answers

Which of the following structures is present in a chemical synapse?

All of the Above Signup and view all the answers

Which ion is responsible for the depolarization of the presynaptic membrane?

Sodium Signup and view all the answers

What is the result of destruction of ependymal cells in the ventricles of the brain?

Loss of cerebrospinal fluid Signup and view all the answers

What is the term for the network of nerves that integrates sensory and motor neurons?

Plexus Signup and view all the answers

Which spinal nerves contribute to the formation of the brachial plexus?

C5, C6, C7, C8, T1 Signup and view all the answers

What is the term for the proper end of the cone-shaped portion of the spinal cord?

Conus Medullaris Signup and view all the answers

Study Notes

Cranial Nerves

Cranial Nerve II is responsible for vision.

Nervous System Divisions

The Autonomic nervous system is responsible for involuntary bodily functions, such as heart rate and digestion.
The Somatic nervous system is responsible for voluntary control of skeletal muscles.
The Peripheral nervous system is responsible for transmitting sensory and motor signals between the central nervous system and the rest of the body.

Physiological Responses

The Autonomic nervous system is primarily responsible for physiological responses, such as increased heart rate, rapid breathing, and muscle tension, in response to a sudden threat.

Neural Cells

Astrocytes are responsible for the support and nourishment of the central nervous system.
Schwann cells are responsible for the myelin sheaths in the peripheral nervous system.

Neuron Organelles

The Golgi Apparatus is responsible for the production of neurotransmitters in neurons.

Synapses

The postsynaptic membrane can be a muscle, gland, or nerve.
Acetylcholine is a neurotransmitter that causes muscle contraction at the synapse.
The structures needed for a chemical synapse are neurotransmitter, synaptic cleft, pre- and post-synaptic membranes.

Ion Flow

Calcium is responsible for the depolarization of the presynaptic membrane.

Ventricles of the Brain

Destruction of the ependymal cells in the ventricles of the brain causes a loss of cerebrospinal fluid and may lead to hydrocephalus.

Nerve Networks

A plexus is a network of nerves found primarily in the peripheral nervous system that integrates sensory and motor neurons to innervate specific regions of the body.
The brachial plexus is formed by spinal nerves C5, C6, C7, C8, and T1.
The sacral plexus is formed by spinal nerves L4, L5, S1, S2, S3, and S4.

Spinal Nerves

There are 31 spinal nerves in total.
The Conus Medullaris is the proper end of the cone-shaped portion of the spinal cord.
The Cauda Equina is a structure located distally to the conus medullaris.