Podcast
Questions and Answers
What is the main function of the cell body in a neuron?
What is the main function of the cell body in a neuron?
What is the primary function of dendrites in a neuron?
What is the primary function of dendrites in a neuron?
How many axons does a typical neuron have?
How many axons does a typical neuron have?
What is the role of glial cells in the nervous system?
What is the role of glial cells in the nervous system?
Signup and view all the answers
What is the anatomical division of the nervous system that consists of the brain and spinal cord?
What is the anatomical division of the nervous system that consists of the brain and spinal cord?
Signup and view all the answers
What is the estimated number of nerve cells in the human nervous system?
What is the estimated number of nerve cells in the human nervous system?
Signup and view all the answers
What is the primary function of the nucleus in a neuron?
What is the primary function of the nucleus in a neuron?
Signup and view all the answers
What is the main difference between dendrites and axons?
What is the main difference between dendrites and axons?
Signup and view all the answers
What is the function of glial cells in relation to neurons?
What is the function of glial cells in relation to neurons?
Signup and view all the answers
How do the number of dendrites on a neuron affect its function?
How do the number of dendrites on a neuron affect its function?
Signup and view all the answers
What is the function of the plasma membrane in a neuron?
What is the function of the plasma membrane in a neuron?
Signup and view all the answers
What is the structural feature that distinguishes nerve cells from other cell types?
What is the structural feature that distinguishes nerve cells from other cell types?
Signup and view all the answers
What is the component of a neuron that contains cytoplasm?
What is the component of a neuron that contains cytoplasm?
Signup and view all the answers
How do glial cells support neurons?
How do glial cells support neurons?
Signup and view all the answers
What is the estimated number of nerve cells in the human nervous system?
What is the estimated number of nerve cells in the human nervous system?
Signup and view all the answers
Study Notes
Human Nervous System
- Comprised of a network of over 100 million nerve cells (neurons) and numerous glial cells
- Divided into the Central Nervous System (CNS) and the Peripheral Nervous System (PNS)
Central Nervous System
- Consists of the brain and spinal cord
- Glial cells support and protect neurons, participate in neural activity, nutrition, and defense processing
Nerve Tissue Structure
- Composed of two cell types: nerve cells (neurons) and glial cells
- Neurons have numerous long processes, while glial cells have short processes
Neuron Structure
- Typical neuron has a cell body, which serves as the control center
- Cell body receives, integrates, and sends nerve impulses
- Cell body components: plasma membrane, cytoplasm, nucleus, and nucleolus
Dendrites
- Branching processes that project from the cell body
- Conduct nerve impulses toward the cell body
- More dendrites enable a neuron to receive more nerve impulses from other cells
Axons
- Larger, longer nerve cell processes that project from the cell body (also called nerve fibers)
- All neurons have only one axon
- Transmits nerve impulses away from the cell body toward other cells (transmits output information)
Human Nervous System
- Comprised of a network of over 100 million nerve cells (neurons) and numerous glial cells
- Divided into the Central Nervous System (CNS) and the Peripheral Nervous System (PNS)
Central Nervous System
- Consists of the brain and spinal cord
- Glial cells support and protect neurons, participate in neural activity, nutrition, and defense processing
Nerve Tissue Structure
- Composed of two cell types: nerve cells (neurons) and glial cells
- Neurons have numerous long processes, while glial cells have short processes
Neuron Structure
- Typical neuron has a cell body, which serves as the control center
- Cell body receives, integrates, and sends nerve impulses
- Cell body components: plasma membrane, cytoplasm, nucleus, and nucleolus
Dendrites
- Branching processes that project from the cell body
- Conduct nerve impulses toward the cell body
- More dendrites enable a neuron to receive more nerve impulses from other cells
Axons
- Larger, longer nerve cell processes that project from the cell body (also called nerve fibers)
- All neurons have only one axon
- Transmits nerve impulses away from the cell body toward other cells (transmits output information)
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz covers the structure and function of the human nervous system, including the Central and Peripheral Nervous Systems, nerve cells, and glial cells. Understand the anatomy of neurons and nerve tissue.
