1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brums [2.3K]
2 years ago
9

Describe the origin and fiber composition of (1) ventral and dorsal roots, (2) the spinal nerve proper, and (3) ventral and dors

al rami.
Biology
1 answer:
Zigmanuir [339]2 years ago
7 0

Answer:

A dorsal root (sensory or afferent) and a ventral root (motor or efferent) originate from the medulla. They unite near the intervertebral foramen, forming the spinal nerve. The nerves emerge from the intervertebral foramen, dividing into ventral and dorsal ramus.

Explanation:

The nerve is a set of nerve fibers perceptible to the naked eye and wrapped in connective tissue. They are made up of roots, trunks and nerve branches (some of them come together and form plexuses).The spinal nerve originate from the spinal cord in the form of 31 pairs: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral and 1 coccygeal. They emerge from the spinal cord through two roots: dorsal roots, made up of sensory fibers that come from the sensory neurons of the spinal ganglion and that penetrate the spinal cord through the posterolateral  and ventral root, made up of motor fibers, coming from the motor neurons of the anterior horn and visceral of the lateral horn of the gray matter of the spinal cord. This root exits the spinal cord through the anterolateral groove, then joins the posterior root to form the spinal nerve, which exits the vertebral canal through the corresponding intervertebral foramen.Each spinal nerve, after leaving the vertebral canal, emits two primary ramus: the dorsal ramus, contains somatic and visceral fibers that go to the skin and muscles of the back and the ventral ramus, which supplies the ventrolateral surface of the skin, body wall and extremities.

You might be interested in
Which organisms have three carnivorous predators and a consumer-producer relationship with at least one organism?
dedylja [7]

Answer:

The organisms that fit in boxes 2 and 7 only

3 0
2 years ago
Do you guys Know what the red thingy is called that is in the neck of frigate birds?
Advocard [28]

Males have gular pouches, which they inflate during mating season.

8 0
3 years ago
Read 2 more answers
Iron is what kind of factor for marine plankton
Alona [7]

limiting is the answer

4 0
3 years ago
Which is NOT an example of
ruslelena [56]
A. Air temperature
The air temperature does not effect how producers get their source of energy. Soil moisture and available sunlight are important for photosynthesis regarding energy conversions.
7 0
3 years ago
What is the total number of bones in the skeleton system​
GrogVix [38]

Answer:

Bones provide the structure for our bodies. The adult human skeleton is made up of 206 bones.

<u>OAmalOHopeO</u>

<u></u>

3 0
3 years ago
Other questions:
  • Explain why it is important to put a lid on the Petri Dush​
    11·1 answer
  • All of the following groups of organisms EXCEPT _______________ are important recyclers found in forest soil.
    10·2 answers
  • What's the difference between plant and animal cells?
    15·1 answer
  • In horses, the allele for straight hair (H) is dominant, and the allele for curly hair (h) is recessive.
    5·1 answer
  • according to the most recent science,if everyone where to live in california,carrying a capacity of planet eart is appromixatley
    11·1 answer
  • The inclusions shown near the bottom of the palisades sill are pieces of the triassic sandstone that
    15·1 answer
  • Match the scenario with the theory of motivation that is being described. Some will be used more than once.
    15·2 answers
  • How increased levels of CO2 in our oceans
    9·1 answer
  • What is the average beak depth of the current finch population?
    11·2 answers
  • The steroid hormone aldosterone affects only a small number of cells in the body because ________. A. only target cells are expo
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!