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The ventral rami of spinal nerves c1 through t1 and t12 through s4 form plexuses which serve the?
The ventral rami of spinal nerves C1-T1 form the cervical plexus, serving the head, neck, and diaphragm. T12-S4 form the lumbosacral plexus, serving the lower limbs and pelvic region. These plexuses distribute nerve fibers to various muscles and skin areas, allowing for coordinated movement and sensation in these regions.
What are the two primary nerve plexuses regulating digestive function?
The two primary nerve plexuses regulating digestive function are the myenteric plexus (Auerbach's plexus) and the submucosal plexus (Meissner's plexus). They are part of the enteric nervous system and play important roles in controlling gastrointestinal motility, secretion, and blood flow.
The only nerve that originates from the forebrain?
The olfactory nerve, responsible for the sense of smell, is the only cranial nerve that originates directly from the forebrain. It carries sensory information from the nose to the brain for processing.
What is the nerve plexus from which the sciatic nerve originates from?
The sciatic nerve originates from the sacral plexus, specifically from the nerve roots L4 to S3. It is the largest nerve in the body and supplies the lower limb with both motor and sensory functions.
Why a peripheral nerve such as the sciatic nerve can contain nerve fiber from several spinal nerves?
The reason why a peripheral nerve such as the sciatic nerve can contain nerve fiber from several spinal nerves is owing to nerve plexuses. These are networks of nerves all tangled together and found mostly in the limbs.
Do all of the spinal ventral rami branch join one another lateral to the vertebral column to form complex nerve plexuses?
False
Ventral rami of spinal nerves C1 through T1 and T12 through S4 take part in forming?
Except for T2-T12, all ventral rami branch and join one another lateral to the vertebral column, forming complicated interlacing nerve networks called nerve plexuses. Nerve plexuses occur in the cervical, brachial, lumbar, and sacral regions and primarily serve the limbs (MarieB, 2010 8th ed. pp. 502)
The phrenic nerve arises from the?
The phrenic nerve arises from the spinal cord at C3, C4, and C5 nerve levels. It originates from the cervical plexus and innervates the diaphragm muscle, playing a crucial role in controlling breathing.
What does the ventral nerve cord do in a earthworm?
there is not a ventral nerve cord
Which nerve plexuses serve the shoulder and arm?
brachial :)
Are the ventral nerve cord and ventral blood vessel connected?
no
Are the ventral nerve cord and the ventral blood vessel connected?
no
What are the 4 major nerve plexuses?
cervical brachial lumbar sacral
What does the ventral root of a spinal nerve do?
the ventral root carries motor response
What major nerve arise from the plexuses?
what major nerves arise from the coccygeal plexus
The ventral rami of spinal nerves c1 through t1 and t12 through s4 form plexuses which serve the?
The ventral rami of spinal nerves C1-T1 form the cervical plexus, serving the head, neck, and diaphragm. T12-S4 form the lumbosacral plexus, serving the lower limbs and pelvic region. These plexuses distribute nerve fibers to various muscles and skin areas, allowing for coordinated movement and sensation in these regions.
From what plexus does the phrenic nerve arise?
The phrenic nerve arises from the cervical plexus, specifically from nerve roots C3, C4, and C5. It travels down through the thorax to innervate the diaphragm, playing a crucial role in breathing.
