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Amanda [17]
3 years ago
7

The exchange of gases across a respiratory surface always occurs by

Biology
1 answer:
ivanzaharov [21]3 years ago
3 0
Inhalation or exhalation
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What is the neurotransmitter released at motor end plates by the axon terminals
Ymorist [56]

In vertebrates, motor neurons release acetylcholine (ACh), a small molecule neurotransmitter, which diffuses across the synaptic cleft and binds to nicotinic acetylcholine receptors (nAChRs) on the cell membrane of the muscle fiber, also known as the sarcolemma.



8 0
3 years ago
Why is the sky blue?
avanturin [10]

Answer:

Because the ocean reflects off of the sky so technically the sky is white but sense the sun causes the ocean to reflect onto the sky, the sky appears to be blue.

Explanation:

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3 years ago
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_______________ is an abnormal episode of motor, sensory, autonomic, or psychic activity resulting from a sudden, abnormal, unco
Jobisdone [24]

Answer:

Seizure is an abnormal episode of motor, sensory, autonomic, or psychic activity resulting from a sudden, abnormal, uncontrolled electrical discharge from cerebral neurons.

Explanation:

Seizure is also formally known as an epileptic seizure which it's symptoms involve uncontrolled body movements mostly with every part of the body and loss of consciousness. Epileptic seizure lasts for the maximum of two minutes before the person returns to a normal state. Bladder control however, is usually absent at this stage. Epileptic seizure can be caused by either provocation or without provocation

In provocation, the causes are very low blood sugar and blood sodium, severe fever, brain infection or concussion. Without provocation; brain injury or tumor and a stroke.

When a seizure lasts more than a maximum of two minutes, it is declared an emergency but some seizures do last for about five minutes and it is regarded as normal. There hasn't been any form of cure for epileptic seizures but there are temporary treatments which can prevent frequent seizures.

3 0
3 years ago
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Why do you think air pressure is greatest at the lowest part of the atmosphere?
Alex777 [14]

Answer:

At sea level, air pressure is greatest because it is caused by the weight of the entire column of atmosphere at that altitude over that location. As altitude increases, the column of atmosphere gets shorter, and so less weight is pressing down at a given altitude, so atmospheric pressure is reduced.

4 0
3 years ago
Should any of Marjorie's family members whom she comes into contact with be considered at risk of pertussis? If so, who?A) Yes,
dalvyx [7]

Answer:

C) Yes, the six-week-old cousin should be considered at risk.

Explanation:

young are at higher risk of pertussis  as compared to older children and adult because  young infants are not fully immunized. At the young age of 6 week, the cousin may not have started the DPT vaccination.  so babies at this age gets easily affected when they are in contact with the infected people.

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