Nervous Tissue Structure and Function

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What are the two main anatomical parts of the nervous system?

Brain and spinal cord
Neurons and dendrites
Central nervous system and peripheral nervous system (correct)
Nervous tissue and neuroglial cells

What is the function of neurons?

To support and protect neuroglial cells
To transmit nerve impulses and control the function of different organs (correct)
To produce neuroglial cells
To form the peripheral nervous system

What is the term for a flask-shaped neuron with only one process?

Pseudounipolar neuron (correct)
Bipolar neuron
Multipolar neuron
Unipolar neuron

What is the function of sensory neurons?

To carry sensations from the skin to the CNS (B) Signup and view all the answers

What is found in the cytoplasm of the perikaryon?

Nissel's granules, Golgi apparatus, and microtubules (B) Signup and view all the answers

What is the function of interneurons?

To associate with other neurons (B) Signup and view all the answers

What is the term for a neuron with several processes?

Multipolar neuron (C) Signup and view all the answers

What is the region of the axon where Nissel's granules are absent?

Axon hillock (B) Signup and view all the answers

What is the main function of the cell body of a neuron?

To provide nutrients and support (A) Signup and view all the answers

Where are Nissil's granules typically found?

Only in the cell body (D) Signup and view all the answers

What is the main component of the myelin sheath?

Lipid (B) Signup and view all the answers

What is the function of Schwann cells in the peripheral nerve?

To form the myelin sheath (A) Signup and view all the answers

What is the characteristic shape of nerve cell bodies in the sympathetic ganglion?

Star-shaped and multipolar (A) Signup and view all the answers

What is the characteristic of the nerve cell bodies in the spinal ganglion?

Arranged in groups (B) Signup and view all the answers

What is the external sheath of dense CT that surrounds the nerve trunk?

Epineurium (C) Signup and view all the answers

What is the characteristic of the nerve fibers that surround the spinal ganglion?

Thin and non-myelinated (C) Signup and view all the answers

What is the function of astrocytes?

To support neurons and blood vessels (C) Signup and view all the answers

Which type of cells are responsible for forming myelin sheath in CNS?

Oligodendrocytes (D) Signup and view all the answers

What is the function of microglia?

To act as phagocytic cells (A) Signup and view all the answers

What is the shape of astrocytes?

Star shape with branched processes (B) Signup and view all the answers

What is the function of ependymal cells?

To line the cavities of brain and central canal of spinal cord (D) Signup and view all the answers

What type of ganglia is associated with the autonomic nervous system?

Autonomic (motor) ganglia (A) Signup and view all the answers

What type of nerve cells are found in Cranio-Spinal (sensory) ganglia?

Pseudo unipolar nerve cells (B) Signup and view all the answers

What is a group of nerve cell bodies called?

Ganglion (C) Signup and view all the answers

What is the primary function of the cell body (perikaryon) in neurons?

To conduct nerve impulses to other neurons (D) Signup and view all the answers

What do dendrites contain?

Nissel's granules and neurofilaments (C) Signup and view all the answers

Which type of sheath surrounds the axon and is interrupted by nodes of Ranvier?

Myelin sheath (A) Signup and view all the answers

In the CNS, what do groups of nerve fibers form?

Tracts (C) Signup and view all the answers

What is the name of the connective tissue sheath that surrounds individual nerve fibers?

Endoneurium (C) Signup and view all the answers

What stains the myelin sheath and makes it appear as a black circle in the section?

Osmic acid (B) Signup and view all the answers

Which cell organelles are lacking in the axoplasm of an axon?

Nissel's granules (C) Signup and view all the answers

What is the significance of the peri neurium?

Surrounds each bundle of nerve fibers (B) Signup and view all the answers