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Mekhanik [1.2K]
2 years ago
13

What part of the microscope is used to move an objective lens into place?

Biology
1 answer:
topjm [15]2 years ago
4 0

Answer:

The ocular micrometer has no units. Revolving Nose Piece - Several objective lenses of varying magnification and numerical aperture are mounted on the revolving nosepiece. The nosepiece must click into place for the objective lens to be in proper alignment.

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The axon joins the cell body at a cone-shaped elevation called the?
astraxan [27]

Answer:

B. axon hillock

Explanation:

The axon hillock is the junction where the cyton connects with the axon. There is only one axon hillock in the neuron and it is a triangular depression of cell boy to the axon. The axons receives impulse from cyton carry to the different parts of the body. The axon hillock is also called initial segment. Because action potential starts here.

Myelin sheath is the cover or layer around the axon and helps in saltatory movement of impulse. The propagation of impulse is fast in myelinated neurons than the non-myelinated neurons.

The neurolemma is the neural membrane of the neurons. It is like the plasma membrane of the cell. The outer covering of neurons is called neurilemma.

Axon collateral is the end of the axon where axon terminals arise. They carry impulse and transmit to the synapse.

4 0
3 years ago
How is muck harmful to Florida? Muck is the reason flooding occurs in Florida. Muck is the reason drought occurs in Florida. Muc
puteri [66]

Answer: Muck is harmful to Florida BECAUSE MUCK IS THE REASON FOR HARD TO CONTROL WILDFIRES IN FLORIDA. Muck refers to organic materials in the soil, which are flammable. During the wet season, these materials are usually moist and so they pose no problem. But during the dry season, they dry up and become flammable.

Explanation: Muck is harmful to Florida BECAUSE MUCK IS THE REASON FOR HARD TO CONTROL WILDFIRES IN FLORIDA. Muck refers to organic materials in the soil, which are flammable. During the wet season, these materials are usually moist and so they pose no problem. But during the dry season, they dry up and become flammable.

5 0
3 years ago
Read 2 more answers
Which of the purely endocrine organs contain modified neurons that produce and secrete neurohormones?
irga5000 [103]

Answer:

D. Only the adrenal medullae

Explanation:

The adrenal medulla is the inner region of the adrenal gland. It consists of the modified sympathetic ganglion of the autonomic nervous system and develops from the same embryonic tissue as all other sympathetic ganglia. The cells of the adrenal medulla lack axons and are [present in the form of clusters around large blood vessels.

The chromaffin cells of adrenal medulla serve the endocrine function. These cells are innervated by sympathetic preganglionic neurons of the ANS. The adrenal medulla secretes epinephrine and norepinephrine which are called neurohormone as being secreted by neurons.

4 0
3 years ago
I need the answer ASAP
Alexeev081 [22]

Answer:

All of those answer are correct.

5 0
2 years ago
Read 2 more answers
Margaret Brown
Kobotan [32]

Answer:

A. Gazed

Explanation:

you cant heave or descend into someones eyes. Gazing or looking into someone's eyes makes the most sense.

7 0
3 years ago
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