Nervous Tissue 2: Peripheral Nerves Quiz

<p>Mixed spinal nerve (B)</p> Signup and view all the answers

<p>Ventral ramus (A)</p> Signup and view all the answers

<p>They fuse together (A)</p> Signup and view all the answers

<p>They are mixed nerves containing both motor and sensory fibers (D)</p> Signup and view all the answers

<p>33 (A)</p> Signup and view all the answers

<p>Efferent neurons (D)</p> Signup and view all the answers

<p>Sympathetic division (C)</p> Signup and view all the answers

<p>Areas of skin sensation (A)</p> Signup and view all the answers

<p>C3, C4, C5 (C)</p> Signup and view all the answers

<p>Innervate skeletal muscles voluntarily (C)</p> Signup and view all the answers

<p>Nerves that carry both afferent and efferent signals (C)</p> Signup and view all the answers

<p>Thoracic nerves (A)</p> Signup and view all the answers

<p>Combining multiple signals over time to trigger an action potential (B)</p> Signup and view all the answers

<p>Innervating the upper limbs (A)</p> Signup and view all the answers

<p>Sciatic Nerve (C)</p> Signup and view all the answers

<p>Shoulder abduction (B)</p> Signup and view all the answers

<p>Central nervous system (D)</p> Signup and view all the answers

<p>Internal organ feedback (C)</p> Signup and view all the answers

<p>The area of skin supplied by the sensory fibres of a single spinal nerve (B)</p> Signup and view all the answers

<p>Sacral Plexus (A)</p> Signup and view all the answers

<p>Sciatic Nerve (B)</p> Signup and view all the answers

<p>L3 (A)</p> Signup and view all the answers

<p>Damage to the dorsal root of the spinal nerve (D)</p> Signup and view all the answers

<p>Back of the head and neck (B)</p> Signup and view all the answers

<p>L1- L4 (C)</p> Signup and view all the answers

<p>Elbow flexion with wrist extension (D)</p> Signup and view all the answers

<p>To allow for muscle innervation by named peripheral nerves (C)</p> Signup and view all the answers

<p>Dermatome (A)</p> Signup and view all the answers

<p>Dense, irregular connective tissue (C)</p> Signup and view all the answers

<p>Axillary Nerve (D)</p> Signup and view all the answers

<p>Perineurium (C)</p> Signup and view all the answers

<p>Femoral Nerve (D)</p> Signup and view all the answers

<p>Transmit sensory information (D)</p> Signup and view all the answers

<p>Medial cutaneous nerve of the forearm (A)</p> Signup and view all the answers

<p>Endoneurium (B)</p> Signup and view all the answers

<p>Peripheral Nervous System (C)</p> Signup and view all the answers

Sensory neurons that transmit information from internal organs and glands to the central nervous system (CNS).

Sensory neurons that transmit information from sense organs to the central nervous system (CNS).

A division of the autonomic nervous system that prepares the body for emergencies by increasing heart rate, respiration, and blood pressure.

The part of the nervous system that controls involuntary actions and maintains internal balance.

The part of the nervous system that controls voluntary actions and allows interaction with the external environment.

A division of the autonomic nervous system that regulates the body during non-emergencies by slowing heart rate, decreasing respiration, and promoting digestion.

Motor neurons that transmit signals from the central nervous system (CNS) to innervate internal organs and glands, leading to involuntary muscle contractions.

Motor neurons that transmit signals from the central nervous system (CNS) to innervate skeletal muscles, leading to voluntary muscle contractions.

The area of skin supplied by the sensory fibers of a single spinal nerve.

A group of muscles innervated by the motor fibers of a single spinal nerve.

The ventral rami of spinal nerves joining together to form bundles, which then branch out to form named peripheral nerves.

The ventral root of a spinal nerve carries motor fibers that control voluntary movements.

Sensory fibers from a spinal nerve that carry information about touch, temperature, pressure, and pain from the skin to the spinal cord.

The specific pattern of sensory loss that results from damage to a single spinal nerve root, affecting the corresponding dermatome.

The specific pattern of weakness or paralysis that results from damage to a single spinal nerve root, affecting the corresponding myotome.

Testing the strength and range of motion of muscles innervated by specific spinal nerves to assess for nerve damage.

The spinal cord is a bundle of nerves that runs down the center of the vertebral column, protected by the bones of the spine.

There are 31 pairs of spinal nerves that branch out from the spinal cord, each connecting to a specific region of the body.

The spinal nerves emerge from the spinal cord through openings called intervertebral foramina, which are spaces between the vertebrae.

The human vertebral column, which protects the spinal cord, consists of 33 bones called vertebrae - 24 are individually movable, and 9 are fused together.

The cervical vertebrae are located in the neck region, and there are 7 of them - labelled C1 to C7.

The thoracic vertebrae are located in the chest region and there are 12 of them, labelled T1 to T12.

The lumbar vertebrae are located in the lower back, and there are 5 of them, labelled L1 to L5.

The sacral vertebrae are located in the pelvic region and there are 5 of them, labelled S1 to S5. They are fused together to form the sacrum.

A bundle of individual neurones, covered by perineurium, found within a peripheral nerve.

The outer layer of a peripheral nerve, made of dense connective tissue.

The thin layer of connective tissue surrounding each individual axon within a peripheral nerve.

A collection of nerve cell bodies located outside the central nervous system.

The number of the spinal nerve that contributes to a specific peripheral nerve.

The Cervical Plexus is formed by the ventral rami of spinal nerves C1-C4 and innervates structures in the neck, back of the head, shoulders, and the diaphragm.

The Brachial Plexus is formed by the ventral rami of spinal nerves C5-T1 and innervates the upper limbs, including the shoulder, arm, forearm, and hand.

The Lumbar Plexus is formed by the ventral rami of spinal nerves L1-L4 and innervates the anterior and lateral aspects of the thigh.

The Sacral Plexus is formed by the ventral rami of spinal nerves L4-S4 and innervates the posterior thigh, leg, and foot.

Each peripheral nerve from a plexus has a root value indicating the spinal nerve roots that contribute to it. For example, the Phrenic nerve has a root value of C3/4/5, meaning it receives contributions from spinal nerves C3, C4, and C5.

The Phrenic nerve, originating from the Cervical Plexus, has a root value of C3/4/5 and controls the diaphragm, a crucial muscle for breathing.

The Median nerve, originating from the Brachial Plexus, controls sensation and movement in the thumb, index, middle, and half of the ring finger.

The Radial nerve, originating from the Brachial Plexus, controls movement in the back of your forearm and hand, including wrist extension and finger extension.