I would have to go with b or c
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Answer:</h2><h2>
C. ACTING AS A SHOCK ABSORBER FOR THE BRAIN AND SPINAL CORD</h2>
Explanation:
Meninges are tissues that provide protection, support and also serve metabolic roles for the nervous system. The cerebrospinal fluid is the fluid of the central nervous system and serves as protection, gives buoyancy to the brain, assists in excretion of waste products of metabolism from the brain.
These meninges are of three membranes; the dura mater which is the outer membrane; the pia mater which is rich in blood vessels and the arachnoid mater which keeps the brain in the cerebrospinal fluid. The meninges, along with the cerbrospinal fluid serves to cushion the brain and spinal cord preventing shocks. The pia mater layer of the meninges provides for the delivering of oxygen directly into the CNS and protects the brain from infections through the action of the leucocytes in the blood.
Answer:
Explanation:
Cholinergic neurons release acetylcholine as a neurotransmitter. The cell bodies of preganglionic neurons of sympathetic division are present in the lateral horns of 12 thoracic and first two lumbar segments of the spinal cord. These are the cholinergic neurons and their axons release the acetylcholine as neurotransmitter into the synaptic cleft. The acetylcholine released by preganglionic sympathetic neurons binds to the cholinergic receptors present in the membranes of postganglionic neurons of the sympathetic division.
Answer: Sterilization.
Explanation:
Sterilization is the process that kills, or deactivates all forms of life so then a product is considered free of viable microorganisms. This process must be designed, validated and carried out to ensure that it is capable of eliminating the microbial load of the product.
Since sterility cannot be demonstrated without causing the complete destruction of the products, <u>sterility is considered when the probability of a product being contaminated is acceptably remote.</u> A critical product is considered sterile when the probability of a microorganism being present in an active or latent form is equal to or less than 1 in 1,000,000 (sterility safety factor 10^-6).
Agents that kill microorganisms are called microbicides or more commonly called "germicides". If the agent kills bacteria, it is called a bactericide. And if it kills fungi, then it is called a fungicide. It is important to consider than <u>after an exposure of the sterilized object to the air or its surroundings, it will have become contaminated again with microorganisms.</u>
Examples of sterilization include physical methods and chemical methods. Physical methods include:
- Wet heat (in steam autoclave)
- Dry heat (in sterilization oven)
- Radiation (gamma radiatio, electron beam, X-ray, ultraviolet, microwave, white light)
Chemical methods include a variety of chemicals in liquid and vapor form, for example:
- Hydrogen peroxide
- Chlorine dioxide
- Ozone gases
- Ethylene oxide
- Propylene oxide
- Peracetic acid
There have been numerous ways that transportation has affected communication over long distances. The postal service has changed significantly over the years. When the post office first opened. The mail was delivered slowly, by horses, carriages, or even ships if overseas. Over the years, mail is delivered overnight by airplanes and semi-trucks. Before transportation, it could months or even years to get a piece of mail, depending on where it being delivered. The opening of the transcontinental railroad also helped to change communication. People could then get to places to see and speak to family or business associates without having to take dangerous methods of transportation. Otherwise, the only way the people could have had any way to communicate would have been by the slow mail system of those days.
