Biology Lab: Structure and Function of Nerve Tissue

Play an AI-generated podcast conversation about this lesson

What is the characteristic of the nucleus of a neuron?

Small, spherical, and heterochromatic
Small, oval, and heterochromatic
Large, spherical, and euchromatic (correct)
Large, oval, and euchromatic

What is the primary function of dendrites in neurons?

Receiving stimuli from the environment and other neurons (correct)
Generating and conducting nerve impulses
Participating in neural nutrition
Supporting and protecting neurons

Which type of neuron has one dendrite and one axon?

Pseudounipolar neuron
Unipolar neuron
Multipolar neuron
Bipolar neuron (correct)

What is the function of glial cells in the central nervous system?

Supporting and protecting neurons, participating in neural activity and nutrition (D) Signup and view all the answers

What is the characteristic shape of dendrites in neurons?

Short and branched like a tree (B) Signup and view all the answers

What is the term for neurons that have one axon and two or many dendrites?

Multipolar neurons (A) Signup and view all the answers

What is the primary function of the neuron in the nervous system?

Receiving, transmitting, and processing stimuli (A) Signup and view all the answers

What are the two main divisions of the nervous system?

Central nervous system and peripheral nervous system (A) Signup and view all the answers

What is the primary component of the central nervous system?

Brain and spinal cord (A) Signup and view all the answers

What is the function of glial cells in the nervous system?

Supporting and assisting neurons (B) Signup and view all the answers

What is the structure of a neuron that receives stimuli?

Dendrites (C) Signup and view all the answers

What is the term for the entire network of nerve cells and glial cells in the human body?

Nervous system (D) Signup and view all the answers

What is the characteristic of the brain and spinal cord?

They are soft and gel-like organs (D) Signup and view all the answers

What is the distribution of white and gray matter in a cross-section of the spinal cord?

White matter is peripheral and gray matter is internal (D) Signup and view all the answers

What is the function of ganglia in the PNS?

To transmit nerve impulses (B) Signup and view all the answers

What is the difference between sensory and autonomic ganglia?

Sensory ganglia transmit sensory information, while autonomic ganglia regulate involuntary functions (D) Signup and view all the answers

What is the structure that surrounds ganglia?

Connective tissue (A) Signup and view all the answers

What type of glial cells forms a myelin layer around axons in the PNS?

Schwann cells (C) Signup and view all the answers

What is the function of the myelin sheath in nerve fibers?

To facilitate the transmission of nerve impulses (A) Signup and view all the answers

What is the term for the gaps between adjacent Schwann cells in myelinated nerve fibers?

Node of Ranvier (C) Signup and view all the answers

What type of nerve fibers are more abundant in the CNS?

Unmyelinated nerve fibers (D) Signup and view all the answers

What are the three connective tissue layers that enclose axons and Schwann cells in nerves?

Epineurium, Perineurium, Endoneurium (A) Signup and view all the answers

What is the main structure of the CNS that is located in the vertebral canal?

Spinal cord (D) Signup and view all the answers