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Explain the Medulla Oblongata
The medulla extends from the pons above and is continuous with the spinal cord below as can be seen in Figure. It is about 2.5 cm long shaped like a pyramid with a base upwards. It lies within the cranium just above foramen magnum. The anterior and posterior surfaces are marked by central fissures.
The outer aspect is composed of white matter, which passes between the brain and spinal cord and gray matter lies centrally. Some cells constitute relay stations for sensory nerves passing from spinal cord to the cerebrum. The vital centers consisting of groups of cells associated with autonomic reflex activity lie in the deeper area. These are the cardiac, respiratory, vasomotor and reflex centers for vomiting, coughing, sneezing and swallowing.
Explain the Simple Cells - Primary Visual Cortex They are most sensitive to lines oriented in a particular angle to the vertical. Simple cells probably receive a convergence of
Why is the idea of modern human "races" is not considered a valid biological concept, and why is the idea of clinal variation more acceptable to biologists?
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Define Hypoparathyroidism Hypoparathyroidism or a decrease in the secretion of parathormone causes an upset in calcium metabolism. Hypocalcemia develops and the muscles go into
Q. Do you know of any activity which may be polluting this water source? Answer: The discharge of waste water from homes, industries, hospitals, etc. into the river pollutes thi
Question: a) Describe wet bulb thermometer and wet bulb temperature. b) What happens to the volume of a rising parcel of air and of a sinking parcel of air? c) What do yo
Procedures for Treatment of Chemical Burns : Accidental splashing of chemicals onto the skin can produce burns as a result of the corrosive nature of the substance involved. It ca
PROCEDURE A. For Gas Supply Visit the LPG gas store room 1 cracking plant along with your counsellor or the lab in charge' and note the way supply of gas is regulated. It
Important physico-chemical properties of pantothenic acid are as follows: a) Pantothenic acid is a pale yellow oily liquid that can only be crystallized as its sodium, potassi
pour plate and direct microscope count
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