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3 years ago

Spinal nerves exiting the cord from the level of l4 to s4 form the

Biology

1 answer:

Novosadov [1.4K]3 years ago

5 0

The question is incomplete as it does not have the options which are:

sacral plexus
femoral plexus
thoracic plexus
lumbar plexus

Answer:

Sacral plexus

Explanation:

The spinal cord is considered an organ which is composed of the nervous tissues. The spinal cord passes through the vertebral column or foramen and based on these foramen is divided into 31 segments from which a bundle of nerves fiber exits.

The spinal cord is divided into the 5 lumbar and 5 sacral division in which the bundle of nerves which exit from the S1 to S4 which are also joined by the L4 and L5 are called the sacral plexus. The sacral plexus is formed of nerves which exit from the spinal cord to the pelvis and the lower limb.

Thus, Sacral plexus is correct.

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"All basic life forms were present from the beginning" is a concept which is fundamental to the concept of

Juliette [100K]

Evolution would be the answer you may be looking for.

5 0

2 years ago

In circumstances where the body requires prolonged or increased levels of a hormone, the DNA of target cells will specify the sy

Norma-Jean [14]

Answer:

Up-regulation.

Explanation:

Hormones may be defined as the chemical messengers of the body that can transmit information and maintains homeostasis. The hormones can directly go into the bloodstream and may release through the special ducts.

The receptors of the hormone is required for the binding of the receptors. To maintain the normal homeostasis of the body, the body shows the up regulation and down regulation. In up regulation the hormone levels increases in the body by increasing the receptor on the specific target organ.

Thus, the correct answer is up regulation.

7 0

3 years ago

Explain what might happen if the chloroplasts in a cell are not working.

marishachu [46]

Answer:

The plant cell will not produce chloroplasts, and the plant will not be green any more.

Explanation:

Hope this helps!!

8 0

2 years ago

Horses and zebras can be bred to produce a zorse, which is infertile. Which is most likely the reason zebras and horses are cons

andrew11 [14]

Answer:

The correct option is B) Their offspring cannot breed.

Explanation:

Organisms belonging to the same species require the ability to breed and produce fertile offsprings. If two organisms breed to produce infertile offsprings, then they are not considered to belong in the same species. Infertile offsprings do not have the capability to reproduce. The breeding between a horse and a zebra produces zorse, which is sterile. This depicts that both the zebra and horse belong to different species as they cannot produce a fertile offspring.

4 0

3 years ago

In rheumatoid arthritis Group of answer choices articular cartilage is damaged and fibrous tissue invades. fibrous tissues ossif

ohaa [14]

Answer:

The correct answer is - all of the above.

Explanation:

Rheumatoid arthritis (RA) causes aggravation of the linning of the joints, particularly in the hands, knee, and fingers. Signs and side effects incorporate red, swollen, excruciating joints, and diminished flexibility and mobility. Articular cartilage is damaged and fibrous tissue invades

If left untreated, it can make extreme harm to the joints and serious complexities in the significant organs. In it, fibrous tissues ossify and bones fuse Rheumatoid joint inflammation is an immune system illness and osteoarthritis is brought about by impacts of maturing. The synovial membrane becomes inflamed and thickens, forming a mass.

The correct answer is - all of the above.

3 0

3 years ago