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natali 33 [55]
3 years ago
11

Ovulation is triggered by a surge of what hormone?

Biology
1 answer:
Sergio039 [100]3 years ago
5 0

Answer:

luteinising hormone

Explanation:

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g Cerebrospinal fluid formed in the lateral ventricles travels through the ________ to reach the third ventricle.
kolezko [41]

Answer: Interventricular foramen

Explanation:

<u>The cerebrospinal fluid is a fluid that covers the brain and spinal cord. It circulates through the subarachnoid space, the cerebral ventricles and the ependymal canal</u>. Several diseases alter its composition and its study usually detects meningeal infections, carcinomatosis and hemorrhages. Some of its functions are:

  • Hydropneumatic support against local pressure for the encephalon.
  • Eliminates metabolites from the central nervous system.
  • Protects the central nervous system from trauma.

This fluid also fills the ventricles, which are large open structures deep within the brain and help keep the brain buoyant and cushioned. The lateral ventricles are the largest ventricles and connect to the third ventricle through the intraventricular foramen. This third ventricle is a narrow, medial cavity located between the diencephalic masses. <u>Then, the interventricular foramina are channels that connect with the ventricles of the lateral walls and with the third ventricle</u>, at the level of the midline of the brain. Like these channels, they allow cerebrospinal fluid to circulate through the rest of the ventricular system of the brain. The walls of the foramina also contain choroid plexuses, responsible for the production of cerebrospinal fluid, which continue in both the lateral ventricles and the third ventricle. After reaching the third ventricle, the cerebrospinal fluid travels through the median aperture into the subarachnoid space at the base of the brain.

6 0
3 years ago
PLEASE HELP ME! MY DEAR FRIEND!!
zubka84 [21]

Answer:

1. By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition.

Explanation:

5 0
3 years ago
_____ is any condition of unusual deposits of black pigment in body tissues or organs.​
Naily [24]
Melanosis is any condition of unusual deposits of black pigment in body tissues or organs. Therefore, your correct answer would be letter choice A provided.
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Plant cells have a ____ white animal cell do not.
masha68 [24]

Plant cells have cell wall but animal cells don't have any cell wall.

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Which statements best describe natural selection? Check all that apply.
Vikki [24]

Answer:a:population must have genetic variation c:Natural selection occurs when the environment changes e:Organisms best suited for the environment survive and reproduce

Explanation:

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3 years ago
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