Nervous System Overview Quiz

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Questions and Answers

What components make up the peripheral nervous system?

The brain and spinal cord

Cranial and spinal nerves along with ganglia (correct)

Only spinal nerves and their associated ganglia

Only cranial nerves

What type of tissue supports the axons within the peripheral nervous system?

Epithelial tissue

Adipose tissue

Dense connective tissue

Areolar tissue (correct)

Which statement about the components of peripheral nerves is accurate?

They are composed of glial cells exclusively.

They consist of bundles of neuron processes (axons). (correct)

They are primarily made of muscle tissue.

Peripheral nerves only contain neuron cell bodies.

Which of the following is NOT a part of the peripheral nervous system?

Brain Signup and view all the answers

What is primarily contained in the peripheral nervous system?

Bundles of axons Signup and view all the answers

What is the primary function of the nervous system?

To control and integrate activities of the body Signup and view all the answers

Which statement correctly describes the central and peripheral nervous systems?

The central nervous system processes information, while the peripheral nervous system carries signals to and from the body. Signup and view all the answers

What is one key distinction between arteries and veins?

Arteries have thicker walls compared to veins, which have thinner walls. Signup and view all the answers

Which classification distinguishes superficial fascia from deep fascia?

Deep fascia forms a strong structure that supports muscles and organs. Signup and view all the answers

What characterizes superficial fascia in contrast to deep fascia?

Superficial fascia contains more adipose tissue. Signup and view all the answers

How many pairs of spinal nerves are there in total?

31 pairs Signup and view all the answers

Which type of root is responsible for carrying sensory information to the spinal cord?

Posterior root Signup and view all the answers

Which segment of spinal nerves is NOT correctly matched with its corresponding vertebral column region?

12 lumbar Signup and view all the answers

What is the primary function of the anterior ramus?

Form plexus and supply front muscles and skin Signup and view all the answers

What type of spinal nerves are classified as mixed nerves?

All spinal nerves Signup and view all the answers

Which statement about cranial nerves is true?

Cranial nerves branch directly from the brainstem and upper spinal cord Signup and view all the answers

What is a ganglion in the nervous system?

A cluster of neuron cell bodies located outside the CNS Signup and view all the answers

Where do cranial nerves pass through?

The foramina in the skull Signup and view all the answers

How many pairs of cranial nerves are there?

12 pairs Signup and view all the answers

What distinguishes cranial nerves from spinal nerves?

Cranial nerves connect directly to the brain Signup and view all the answers

What type of bleeding is typically associated with an arterial injury?

Projectile bleeding Signup and view all the answers

How does the bleeding pattern in arteries differ from that in veins?

Arterial bleeding has a tree-like pattern, while venous bleeding has a river-like pattern. Signup and view all the answers

What is a significant characteristic of veins compared to arteries regarding their structure?

Veins contain valves to prevent backflow. Signup and view all the answers

What effect does the presence of valves in veins have on blood flow?

It prevents the backflow of blood. Signup and view all the answers

Which of the following statements is true regarding the pattern of distribution of blood vessels?

Arteries have a tree-like distribution, while veins have a river-like distribution. Signup and view all the answers

Study Notes

Nervous System

Controls and integrates bodily functions
Has two main parts: central and peripheral nervous systems

Central Nervous System

Comprises brain and spinal cord

Peripheral Nervous System

Includes cranial and spinal nerves
Contains bundles of neuron processes (axons) supported by delicate areolar tissue
Has ganglia, which are clusters of neuron cell bodies outside the central nervous system

Cranial Nerves

12 pairs of cranial nerves branch off the brain and upper spinal cord
Pass through openings (foramina) in the skull
Can be motor, sensory or mixed

Spinal Nerves

31 pairs of spinal nerves leave the spinal cord
Pass through intervertebral foramina
Named based on the region of the vertebral column they associate with:
- 8 cervical
- 12 thoracic
- 5 lumbar
- 5 sacral
- 1 coccygeal
Are mixed nerves

Spinal Nerve Components

Two roots connect each spinal nerve to the spinal cord:
- Posterior (dorsal) root: afferent (sensory)
- Anterior (ventral) root: efferent (motor)
Mixed nerve trunk: Formed by the union of both roots
Anterior (ventral) ramus: Supplies muscles and skin of the front and forms plexuses
Posterior (dorsal) ramus: Supplies muscles and skin of the back, does not form plexuses

Blood Vessels

Arteries: Carry oxygenated blood away from the heart
- Thick muscular walls
- Have valves
- Bleed in a projectile manner with injury
- Have a tree-like pattern of branching
Veins: Carry deoxygenated blood back to the heart
- Thin walls
- Have valves
- Bleed continuously with injury
- Have a river-like pattern of branching

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Description

Test your knowledge on the nervous system, including its structure and components. This quiz covers the central and peripheral nervous systems, cranial and spinal nerves, and their functions. Perfect for students studying biology or anatomy!