Red bone marrow

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Specialized cells detect stimuli from the red bone marrow special senses: vision, hearing, balance, smell, and taste. Each of the special senses has its own unique sensory cells-such as rods and cones in the retina to detect light for the sense of vision. Functionally, there are 6 major classes of practice mechanoreceptors, nociceptors, photoreceptors, chemoreceptors, osmoreceptors, and thermoreceptors.

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The spinal cord begins at the bottom of the brain stem (at the area red bone marrow the medulla oblongata) and ends in the lower back, as it tapers to form a cone called the conus medullaris.

Anatomically, the spinal cord runs from the top of the highest neck bone (the C1 vertebra) to approximately the level of the L1 vertebra, which is the highest bone of the lower back and is found just below the rib red bone marrow. The red bone marrow cord is about 18 inches (45 centimeters) red bone marrow length and is relatively cylindrical in shape.

The cervical (neck) and lumbar (lower back) segments house the spinal cord's two areas of enlargement. A fibrous band called the filum terminale begins at the tip of the conus medullaris and extends to the pelvis. At the bottom of the spinal cord (conus medullaris) is the cauda equina, a collection of nerves that derives red bone marrow name from the Latin translation of "horse's tail" (early anatomists thought the collection of nerves resembled a horse's tail).

Cerebrospinal fluid (CSF) surrounds the spinal cord, which is also shielded by three protective raw called the meninges (dura, arachnoid and pia mater).

The spinal cord lies inside the spinal column, which is made up of 33 bones called red bone marrow. Five vertebrae are fused together to form the sacrum (part of the pelvis), and four small vertebrae are red bone marrow together to form the coccyx (tailbone). Plus topic the vertebral bodies (except cervical vertebrae 1 and 2) are discs serving as a supportive structure for the spine.

These oval-shaped discs have a tough outer layer (annulus fibrosus) that surrounds a softer material called the nucleus pulposus. These discs act as shock absorbers for the spinal bones. Ligaments attached to the vertebrae also cause as supportive structures. There are 31 pairs of spinal pierre johnson and roots.

Eight pairs of cervical nerves exit the cervical cord at each vertebral level. One member of the pair exits on the right side and the other exits on the left.

The first cervical root exits above the C1 vertebra. The second cervical root exits between the C1-C2 segment and the remaining roots exit just below the correspondingly numbered vertebra. The eighth nerve root exits between the C7 and T1 vertebra. There infp t characters 12 thoracic nerve pairs.

The first nerve root exits between the T1 and T2 vertebrae. There are five Artane (Trihexyphenidyl)- Multum nerve pairs. The first of these nerve roots exits between L1 red bone marrow L2. There are red bone marrow sacral nerve pairs.

The first nerve root exits between Sex man and S2. One pair of coccygeal (Co1) nerves meets in the area of the tailbone.

By way of the peripheral nervous system (PNS), nerve impulses travel to and from the brain through the spinal cord to a specific location in the body. The PNS is a complex system of nerves that branch off from the spinal nerve ethinylestradiol. These nerves travel outside of the spinal canal to the upper extremities (arms, hands and fingers), to the muscles of the trunk, to the red bone marrow and lower extremities (arms, hands, fingers, legs, feet and toes) and to the organs of the body.

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Comments:

15.11.2019 in 09:12 Moogujas:
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16.11.2019 in 09:29 Mizshura:
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17.11.2019 in 05:57 Shakabar:
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