Answer: The correct answer to the question is option A
A-delta fibers; C fibers
When you stub your toe, you first feel a quick, sharp pain transmitted by A-DELTA FIBERS, and then a moment later, a dull, throbbing pain transmitted by C FIBERS
A-delta fibers are sensory nerve fibers that stimulate pain receptors,they transmit sensory information while C fibers are class if fibers found in the somatic sensory system,they are afferent fibers that conveys input signals from the periphery to the central nervous system.
Explanation: When one stubs the toe,the second-fastest nerve fibers carry messages not from the touch receptors, but the pain receptors; that explains the sharp pain a split second after the thud. They cause what's called second pain, the throbbing pain you feel a few seconds after you stub your toe.
When the toe is stubbed,the impact is felt first before the pain, you're slamming it with a force that is equal to 2-3 times your body weight. (that's about the same force as a karate punch) since the toe has a tiny surface area, that force can't spread out. So the pain stays concentrated at the point of impact before pain is felt,this happens as a result of nerve fibers processing the painful stimuli which brings about that feelings/sensation of pain,and it reverts back after the painful stimulus has been removed.
Stubbing of the tie brings about throbbing toe pain, swelling and bruising.
A it True it’s not really hard
The answer is FALSE. A
lipid is what consists of glycerol and 3 fatty acids. Waxes are organic
compounds that characteristically consist of long alkyl chains. They may also
include various functional groups such as fatty acids, aromatics, amides,
ketones, and aldehydes. Synthetic waxes are often long-chain hydrocarbons
(alkanes or paraffin) that lack
functional groups.
3 copies of chromosome in karyotype shows that person has genetic disorder called down syndrome.
<h3>What do you mean by karyotype?</h3>
A karyotype test examines the structure, shape, and number of chromosomes in your body. The sections of our cells that hold your genes are called chromosomes.
Instead of having one copy of chromosome 21, an egg or sperm cell may preserve both copies. If this egg or sperm is fertilized, the baby will be born with three copies of chromosome 21. This is referred to as trisomy 21. Trisomy 21 is present in around 95% of people with Down syndrome. Instead of the usual two copies of chromosome 21, each cell in the body has three copies of chromosome 21 in this kind of Down syndrome.
Learn more about genetic disorders here:
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Answer:
Autotrophs, unicellular
Explanation:
Algae are simple plant-like protists. They live in seawater, freshwater and in damp places. The algae have chlorophyll meaning they carry out photosynthesis. Some are unicellular and others are multicellular. They have a cellulose cell wall and reproduce either sexually or asexually.
