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klasskru [66]
3 years ago
13

A motor unit is defined as:

Medicine
1 answer:
Reil [10]3 years ago
4 0

Answer:

The answer is B: All the muscle cells innervated by a single motor neurorn.

Explanation:

It is called a motor unit, all muscle fibers that are innervated by a motor neuron cell. A motor neuron cell can establish contact with up to 150 muscle fibrils, which when activated causes their simultaneous contraction, therefore, all the muscle fibers of a motor unit contract and relax at the same time.

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Answer:

copd

Explanation:

3 0
1 year ago
Explain why during peak, exhausting levels of activity glycolysis generates the greater amount of ATP compared to the mitochondr
Mamont248 [21]

Answer:

The answer to this question lies in the number of steps, and substances, that are needed in order to yield ATP from ADP. While in anaerobic glycolysis pyruvic acid and lactic acid will yield their energy so that ADP can be re-synthetized into ATP, producing 2 molecules of ATP from that simple chain of reaction, aerobic glycolysis depends on the presence of oxygen, and several more chemical steps, chemical reactions, in order to finally yield all the ATPs it can yield.

Explanation:

When we are talking about intense training, like a sudden sprint, we are talking about the body needing ATP as fast as it possibly can get it so the muscles can move. Because of this immediacy, the body resorts first to its stores in muscle tissue and in the liver, to feed the anaerobic processes for ATP formation. The other process, called the Lactic Acid system, is the second of the anaerobic processes and its benefit is that while not requiring oxygen to produce ATP, it will use the stores of glycogen in the muscle and the liver, and through the chemical reactions of enzymes, it will produce enough ATP to power the exercise for at least a few minutes, without having to resort to the aerobic system. The number of steps taken to yield ATP are much lesser, and thus much more immediate, than in aerobic glycolysis.

4 0
2 years ago
Which of the following statements is FALSE about fluid compartments and body fluid composition?
olga2289 [7]

Answer:

Out of the four given statements, the false statement is

option d)

Explanation:

a) Muscle mass and hence water content is greater in males than in females

b) Transcellular fluid is the portion of total water content in the body which is contained within the lined spaces of epithelial tissue. It is a part of the extracellular fluid which includes plasma and lymph can also be considered as tanscellular fluid.

c) Na+ and Cl- are the major content of extracellular fluids

d) About 60% of water inside the body is contained within extracellular and not in intra cellular.

7 0
2 years ago
Multiple Choice 32. What size (internal diameter) endotracheal tube should be used to intubate a newborn with an estimated gesta
castortr0y [4]

Answer:

2.5mm

Explanation:

6 0
2 years ago
Tony fell two stories while working on a construction site. The left side of his head hit some concrete steps. During his recove
alina1380 [7]

Answer: Broca's area

Explanation:

Broca's area is primarily responsible for producing speech. It controls motor functions involved with speech production. It is a region in the frontal lobe of the dominant hemisphere, usually the left, of the brain.

People who have damage to this area of the brain can understand words but struggle to put them together in speech. Tony clearly has no problem processing what is being said but because of the damage he can't put his thoughts to words.

8 0
3 years ago
Read 2 more answers
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