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ICE Princess25 [194]
3 years ago
5

What is an example of a muscle of facial expression?

Biology
1 answer:
allochka39001 [22]3 years ago
5 0
Buccinators are muscles in the cheek that help smiling.
Laris oculi are muscles helping close eyelids.
Orbicularis oris is a muscle that helps manipulate the mouth:
the correct answer is D. all the above are muscles that help facial expression.
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magine that the animal body produced sperm and eggs with mitosis instead of meiosis. What chromosome number would the autosomes
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Answer:

sixteen chromosomes

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3 years ago
A bacteria culture starts with 200 bacteria and in 1 hour contains 400 bacteria. How many hours does it take to reach 2000 bacte
RSB [31]

Answer:

At 0hr it was 200 bacteria

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7 0
2 years ago
the autonomic (involuntary) nervous system controls the rate at which the heartbeats. sympathetic (fight or flight) signals spee
Vanyuwa [196]

the autonomic (involuntary) nervous system controls the rate at which the heartbeats. sympathetic (fight or flight) signals speed up the heart’s rate while parasympathetic (rest and digest) signals slow it down. The part or parts of the heart that forms sympathetic and parasympathetic neurons form synapses is called cardiac plexus.

Cardiac plexus is a plexus of the nerves that are present at the base of the heart and is divided into superficial and deep part. The sympathetic and the parasympathetic nerves form synapses with heart in the form of cardiac plexus.

The sympathetic nerves are responsible for activating flight or fight mode while parasympathetic nerves are responsible for restoring the normal body state.

To learn more about sympathetic nerves here

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5 0
1 year ago
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6 0
3 years ago
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List Five ways of a physical change
Pachacha [2.7K]
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7 0
2 years ago
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