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givi [52]
3 years ago
7

Explain what happens in the nervous system when your finger is hurt

Biology
1 answer:
vladimir2022 [97]3 years ago
4 0

Tissue damage activates nociceptors or pain receptors in the skin. A signal is sent to the peripheral nerve to the spinal cord where neurotransmitters or chemical messengers are released. It activates other nerves to pass signal to the brain. The signals are relayed to the somatosensory cortex for sensation, frontal cortex for thinking and limbic system for emotional response.

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In an animal cell, what is the function of the lysosomes?
Alik [6]
<span><span><span>Release enzymes outside of the cell (exocytosis)</span>
which may serve the purpose of destroying materials around the cell.</span><span><span>Break-down 'digestion' of materials from inside the cell (autophagy)</span> 
i.e. by fusing with vacuoles from inside the cell. 
This could include digesting worn-out organelles so that useful chemicals locked-up in their structures can be re-used by the cell.</span><span><span>Break-down 'digestion' of materials from outside the cell (heterophagy)</span>
i.e. by fusing with vacuoles from outside the cell.
This could include breaking-down material taken-in by phagocytes, which include many types of white blood cells - also known as leucocytes. Specific mechanisms of heterophagy can be:<span><span>phagocytic - by which cells engulf extracellular debris, bacteria or other particles - only occurs in certain specialized cells</span><span>pinocytic - by which cells engulf extracellular fluid</span><span>endocytic - by which cells take-up particles such as molecules that have become attached to the outer-surface of the cell membrane.</span></span></span><span><span>Recycle the products of biochemical reactions that have taken place following materials being brought into the cell by endocytosis (general term for this 'recycling' function: biosynthesis) </span>
Different materials (chemicals) are processed in different ways, e.g. some structures may be processed/degraded within lysosomes and others are taken to the surface of the cell.</span><span>Completely break-down cells that have died (autolysis)</span></span>

In general, the functions of lysosomes involve breaking-down i.e. processing to 'make safe' or make use of, or removing from the cell e.g. by exocytosis, useless and potentially harmful materials such as old worn-out parts of the cell or potential threats such bacteria. Lysosomes can therefore be thought of as the rubbish disposal units within cel

8 0
3 years ago
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Answer:

one example could be the Antarctic midge and another could be tardigrades

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3 years ago
A frog lays thousands of eggs because many eggs die. This behavior is an example of __________________. Competition overpopulati
lukranit [14]

The ecological relationships between the organisms show the interactions between the species or organisms that can negatively or positively affect them.

A frog lays thousands of eggs because many eggs die. This behavior is an example of <u>overpopulation</u>.

Overproduction can be explained as:

  • Overproduction is defined as the generation of more or a high number of offspring, which can be supported by the environment.

  • The high number of offspring in the environment leads to the competition of limited resources.

  • Overproduction is the large number of offspring delivered to the environment, which cannot be supported by the ecosystem they are living in.

Thus, the frogs show the behavior of overproduction.

To know more about overproduction, refer to the following link:

brainly.com/question/8900736

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3 years ago
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2. </span><span>Ocean currents bring nutrient-rich water into coastal regions.</span>
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