Brain and Nerves		Spinal Cord

Pictures

Nerves the nerves of the body can be divided into twelve pairs

Nerves the nerves of the body can be divided into twelve pairs of cranial nerves which arise from the brain and brainstem 31 33 pairs of spinal nerves which arise from the spinal cord in segmental series 8 cervical 12 thoracic 5 lumbar 5 sacral and 1 3 coccygeal The spinal nerves emerge from the intervertebral foramina which lie along side of adjacent vertebrae The pass laterally into the neck or trunk A typical spinal nerve is formed by the union of a dorsal root which arises from the dorsal aspect of the spinal cord and a

---

uncropped dog and nerves jpg

Outline of dog with brain spinal cord and nerves

---

Bartolomeo Eustachi Brain and Spine Anatomy c 1722

Bartolomeo Eustachi 1520 1574 Tabulae anatomicae clarissimi viri 1722

---

spinal cord gif

nerve roots are responsible for stimulating movement and feeling The nerve roots exit the spinal canal through the intervertebral foramen small openings between each vertebra The brain and the spinal cord make up the Central Nervous System CNS The nerve roots that exit the spinal cord spinal canal branch out into the body to form the Peripheral

---

2355W jpg

---

The central nervous system is comprised of the brain and spinal

さてSystemとpのことだけど さてSystemとpのことだけど

---

2356W jpg

---

070126 spinal cord 03 jpg

Two thoracic vertebrae in a human with the spinal cord and nerves exiting the column Credit 3DScience com

---

brain jpg

New England Peripheral Nerve Trauma Clinic

---

2355W jpg

---

peripheralnerves jpg

---

FrogBrainDorsal jpg

enlargements are due to the large number of neurons required for forelimb and hindlimb functions With care you may see the dorsal roots of spinal nerves Dorsal View of the Brain

---

multiple sclerosis graphic jpg

her to become involved in a medical study with a big hitch We could offer her a chance at stopping her disease but at the same there there was a risk that she may die said Freedman MS can cause damage to the spinal cord nerves and brain Over several months in 2002 doctors harvested stem cells from Molson s blood removed all traces of MS and then gave her high doses

---

spinal2 jpg

the brain and the rest of the body It is a delicate structure protected by the vertebrae and their associated ligaments and muscles the spinal meninges and the cerebrospinal fluid CSF In adults the spinal cord is approximately 42 to 45 cm in length and extends from the foramen magnum in the occipital bone in the skull to the 2nd lumbar vertebral level L2 However the

---

Thoracic Bones Discs Nerves and Cord with Labels copy 250 jpg

perhaps the most important of the muscles Other paraspinal muscles posteriorly and the abdominal muscles anteriorly also contribute substantially 1 The Spinal Cord and Nerves The spinal cord begins at the base of the brain and runs down the spine to the low back It is protected within the spinal canal a bony arch formed by each of the vertebral bones

---

hunerv17 gif

is organized into ascending sensory tracts running toward the brain and descending motor tracts proceeding away from the brain and down the spinal cord See below label the diagram Label as above

---

spinal nerves jpg jpg

nervous system refers to the brain spinal cord and spinal nerves The spinal cord comes out of the base of the brain and the spinal nerves are located in the spinal cord Animal Nervous System

---

SpinalCord jpg

from the brain down to different segments of the spinal cord In lower segments of the spinal cord there is less white matter because there are fewer axons traveling to and from the brain Dorsal root ganglion Receptors in the skin send information to the spinal cord through the spinal nerves The cell bodies for these nerve fibers are located in the dorsal root ganglion The

---

hdc 0000 0001 0 img0007 jpg

damaged areas Doctors have observed this phenomenon in people who are recovering from a stroke which is usually the result of a blockage in one of the blood vessels that feeds the brain The central nervous system CNS is made up of the brain and spinal cord The peripheral nervous system PNS is made up of 31 pairs of nerves that travel and branch out through the head

---

cord sagittal jpg

2 the lateral horns well defined in thoracic segments and composed of visceral neurons and 3 the ventral horns especially large in the cord enlargements and composed of motor neurons The white matter forming the ascending and descending spinal tracts falls in three paired funiculi or sectors the dorsal or posterior funiculi lying between the dorsal horns the lateral

---