Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
How is it structurally explained that the motor activity of the left side of the body is controlled by the right cerebral hemisphere and the motor activity of the right side of the body is controlled by the left cerebral hemisphere?
In the cerebral hemispheres there are neurons that centrally command and control muscle movements. These neurons are known as superior motor neurons and they are located in a special gyrus of both frontal lobes called as motor gyrus (or precentral gyrus). The superior motor neurons send axons that transmit impulses to the inferior motor neurons of the spinal cord (for neck, trunk and limb movements) and to the motor nuclei of the cranial nerves (for face, eyes and mouth movements).
The fibers cross to the other side in exact areas of those axon paths. About 2/3 of the fibers that go down the spinal cord cross at the medullar level forming a structure known as pyramidal decussation. The other (1/3) of fibers descend in the same side of their original cerebral hemisphere and cross only within the spinal cord at the level where their associated motor spinal root exit. The fibers that command the inferior motor neurons of the cranial nerves cross to the other side just before the link with the nuclei of these nerves.
Explain why methionine is the first amino acid in every growing polypeptide. The tRNA that pairs with the start codon on mRNA carries methionine. RNA having ribose; DNA contain
Q. Polyunsaturated Fatty Acids required for dyslipidemia? These are also liquid at room temperature. There are two main types of dietary PUFA's of significance: a) linol
Q. What are melanocytes? Melanocytes are epithelial cells of the skin specialized in secretion of melanin and Melanin is a pigment that besides coloring the iris of the eye and
Define working of Kidney in excretion of zinc in humans? Very small amount of zinc is excreted in the urine (0.3-0.7 mg/day), as most of the zinc filtered by the kidney is reab
Q. What are the procedures of the photochemical stage of the photosynthesis process? Photolysis of water, with liberation of molecular photophosphorylation and oxygen of ADP, w
In what ways could human activity lead to the extinction of a species in an area? Human activity could lead to extinction of a species by (a) over-hunting, e.g. elephants, rhin
Give the results of DistaE Dissection ? Results : For acute dissection of different parts of aorta, the mortality is reported as 9 to 33 per cent. In the International Regis
What is the neuromuscular synapse? Neuromuscular synapse is the structure by which the neural impulse passes from the axon of a motor neuron to the muscle cell. This structure
Q. What is the Biology field that studies the classification of living beings? The Biology field that studies the classification of living beings is termed as Taxonomy. Q.
what are the functions of cytoplasm ?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd