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gayaneshka [121]
3 years ago
15

What is the role of Langerhans cells?

Biology
2 answers:
My name is Ann [436]3 years ago
8 0

3 identify pathogens that enter the body and carry them to lymph nodes for destruction

Marina CMI [18]3 years ago
4 0

Langerhans' cells are white blood cells in the immune system that normally play an important role in protecting the body against viruses, bacteria and other invaders. They are found in the skin, lymph nodes, spleen, bone marrow and lungs.


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The main function of the central nervous system is to
harina [27]

Answer:

The central nervous system (CNS) controls most functions of the body and mind.

i think this is it

Explanation:

4 0
3 years ago
Sarah turns quickly and sees the soccer ball hurtling toward her face. She blinks and ducks for cover. During this reaction, Sar
balandron [24]

Answer:

The correct answer is: C.

Explanation:

  • The given situation is the example of a Reflex Action.
  • Reflex action can be defined as an action shown in response to a sudden stimulus.
  • The CNS or the Central Nervous System is comprised of the Brain and the Spinal Cord which receives the Sensory impulses from the Receptor organ, integrates or decides on the response which needs to be provided and then sends the Response impulses to the Effector organ.
  • The PNS or the Peripheral Nervous System is comprised of the sensory and motor neurons those are responsible for connecting the Sensory organ and the Motor organ to the CNS, respectively.
  • In the situation, Sarah's eyes perceives the ball and sends sensory impulses through the optic nerve containing the sensory neurons (PNS) to the spinal cord.
  • The spinal cord possess inter-neurons (CNS) that decides over the action to be done in response to the stimulus.
  • The Response stimulus is send from the inter-neurons via the motor neurons (PNS) to the eye muscles of Sarah and Sarah performs the action, that is, she blinks.
6 0
3 years ago
Which are precautions to take when working with heat and fire? Check all that apply. Do not touch. Keep flammables away. Avoid t
e-lub [12.9K]

Answer: All the given precaution are important to take care when working with heat and fire.

Explanation:

Double check on these precaution should kept be while working or experimenting with fire and heat:

  • Hair should be tied back : bun or pony will be fine. if hair are untied then chances of catching fire by hair will be high.
  • Do not touch hot equipment ,if required use gloves or tongs. Touching hot equipment with bare hands may lead to burns or minor (or major) accident
  • Keep your face and eyes away from the flame while experimenting.Cover your face with mask and goggles.
  • Do not mix chemical until or unless told to do so. This is because some times mixing of chemicals leads to evolution of large amount of heat which can difficult to handle.
  • Be careful regarding cloths while working with heat and fire.
  • Flammables must be kept away and should be used with caution. Safer distance must be maintained
5 0
3 years ago
Read 2 more answers
Difference between eukaryotic and prokaryotic cells
kicyunya [14]

Answer:

The main difference is the presence of a nucleus.

Explanation:

One of the biggest differences is the presence of a nucleus with an envelope. This is very important because in eukaryotes it is present, but in prokaryotes, the genetic material is in the cytosol, although it's not exactly dispersed, it's slightly grouped. Also, the DNA in prokaryotes is organized in circular chromosomes while in eukaryotes it's organized in linear chromosomes arranged in an X shape. There are many more differences, but these two are the more important ones.

4 0
3 years ago
An investigation was done to see if keeping the lights on for different amounts of time each day affected the number of eggs chi
sergiy2304 [10]

Answer:

This question is incomplete, the complete part is asking to identify the variables of the experimental statement i.e. dependent and the independent variables.

Independent variable: different amounts of time light is on

Dependent variable: Number of eggs laid by chicken

Explanation:

In a scientific experiment, variables, which are factors that can be altered, are used. These variables are independent and dependent variables.

An independent variable is that variable that is subject to manipulation or control by the experimenter in order to bring about a change in the dependent variable. For this experiment, the independent variable is the DIFFERENT AMOUNT OF TIME LIGHT IS ON.

On the other hand, a variable is said to be dependent if it is the measurable or responding variable. The response of the dependent variable is dependent on the independent variable. In this experiment, the dependent variable is the NUMBER OF EGGS LAID BY CHICKENS. The number of eggs laid (dependent variable) is dependent on the amount of time light is on (independent variable).

3 0
2 years ago
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