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mars1129 [50]
3 years ago
15

In humans, the quadriceps muscle is a skeletal leg muscle under voluntary control. As such, it contracts in response to signals

from the motor cortex in the cerebrum. If such a muscle contracts involuntarily, that indicates:
Biology
1 answer:
Masja [62]3 years ago
8 0

Answer:

The correct answer is - operation of reflex arc.

Explanation:

The reflex arc is a unique and special type of neural pathway that starts with a sensory neuron and ends with a motor neuron. In this operation sensory neuron acts as the receptor and motor neuron is effector. This type of neural circuit helps in faster response.

Voluntary muscles like quadriceps muscle are normally in control voluntarily however, such muscle may contract involuntary due to reflex arc. This type of contraction takes place before the signal has even reached the brain.

In this response the sensory neuron takes the signal to the spinal cord and then motor neuron to the effector muscle for faster response.

Thus, the correct answer is - operation of reflex arc.

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C

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0.20-0.10=0.10

because the population was decreased

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What two words best describe bacterial reproduction? Why?
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(1) In order to move your muscles need to_____(blank)
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(1) In order to move your muscles need to ligaments.

(2) Joint holds bones together.

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What does paleontology, biogeography, embryology, and anatomy reveal bout evolution
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<u>Explanation: </u>

As an organism dies, the remaining of these organisms will be buried in soil. These are fossils. Paleontology supports evolution with the information that are related to the fossils, footprints etc. With these we can study the evolution of organisms and also the changes they undergo. There are some technologies like radiometric dating that can be used for the determination of these rocks and fossils ages.

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