Know the 31 pairs of spinal nerves and how many in each section?

Solutions

Expert Solution

1. The nervous system is divided into central nervous system and peripheral nervous system. spinal nerves are the major part of the peripheral nervous system. They are composed of both motor and sensory fibres.

The spinal nerves are named according to where they emerge from the spine. Spinal nerve is attached to the spinal cord by ventral root which relays motor information, and dorsal root which relays sensory information. Both dorsal and ventral root of the spinal cord forms the spinal nerve.

There are 31 pairs of spinal nerves. The division of spinal nerves include:

Cervical - 8 C1 to C8 from cervical spine.

Thoracic - 12 T1 to T12 from thoracic spine.

Lumbar - 5 L1 to L5 from lumbar spine.

Sacral - 5 S1 to S5 from sacrum.

Coccygeal - 1 from the coccyx.

The fibers of the sensory root carries sensory inormation to the brain. The fibers of the motor root carries motor information from the brain.

Sydney Mullin answered 8 months ago

Next > < Previous

Related Solutions

A typical spinal cord has how many pairs of spinal nerves, and it ends at the...

A typical spinal cord has how many pairs of spinal nerves, and it ends at the level of what vertebrae? After injuring her back, a 22-year old woman exhibits a positive Babinski reflex. What does this imply about her injury? Describe a dermatome. ? please type it

How are cranial nerves and spinal nerves similar? How are they different? 2. What components come...

How are cranial nerves and spinal nerves similar? How are they different? 2. What components come together to form a spinal nerve? What’s the difference between a dorsal root, ventral root, dorsal primary Ramos,and ventral primary ramus? What type of fibers, sensory or motor, are found in each of these structures? 3. At what level is a spinal tap performed. From an embryological stand point why is this possible? 4. What is the embryological basis for most NTDs? Can they...

Which of the following is a characteristic of both spinal and cranial nerves? Which of the...

Which of the following is a characteristic of both spinal and cranial nerves? Which of the following is a characteristic of both spinal and cranial nerves? They are formed from the fusion of anterior and posterior roots. They are predominantly motor. They contain bundles of axons. They are pure sensory.

How many pairs of setae are there in each segment of the worm？Does each segment have...

How many pairs of setae are there in each segment of the worm？Does each segment have setae? What body region or segment are the walking legs attached to? What about the swimmerets? What is the function of these gills? Try to identify and explain what the crayfish had been eating: Inside the stomach locate the gastric mill, a hard serrated structure. Study it closely by running a finger along the tooth-like margin. What is this structure’s function? What are the...

the __ provide passageways fro spinal nerves to exit the verebral column and travel to other...

the __ provide passageways fro spinal nerves to exit the verebral column and travel to other parts of the body. -vertebral foramina -intervertbral foramina -vertebral canals -articular facets -transverse foramina

The nervous system, composed of the brain, spinal cord, nerves, and ganglia, serves as the human...

The nervous system, composed of the brain, spinal cord, nerves, and ganglia, serves as the human body’s primary communication and control system. Examine how the physiology of your chosen organ system is affected when there is an anatomical variation vs. a pathological change. You can use real life examples of anatomical variations and pathologies.

The nervous system, composed of the brain, spinal cord, nerves, and ganglia, serves as the human...

The nervous system, composed of the brain, spinal cord, nerves, and ganglia, serves as the human body’s primary communication and control system. Looking at the major organs within this system, explain how the anatomy of each organ provides insight into its physiological functions.

Match each term with its most appropriate definition 1) brain 2) meninges 3) nerves 4) spinal...

Match each term with its most appropriate definition 1) brain 2) meninges 3) nerves 4) spinal cord 5) coma 6) concussion 7) hemiparesis 8) cerebrovascular accident 9) epilepsy 10) syncope 11) transient ischemic attack 12) electroencephalogram 13) lumbar puncture 14) cerebrum 15) cerebellum 16) pons 17) medulla oblongata 18) dura mater 19) aphasia 20) Bell's palsy Definitions: Loss of ability (as in a stroke) to speak Deep sleep with no response to stimulus Record of the electrical activity of the...

Activity 3: Identify the parts of the spinal cord in spinal cord cross section model:

Activity 3: Identify the parts of the spinal cord in spinal cord cross section model: Spinal Cord Cross Section Parts Description / Function. Grey Matter White Matter Central Canal Dorsal Root Dorsal Root Ganglia Ventral Root Spinal Nerve

How many lone pairs are on the central atom in BCl3?

A) How many lone pairs are on the central atom in BCl3? Express your answer numerically as an integer. B)How many lone pairs are on the central atom of BrF3? Express your answer numerically as an integer.

Subjects