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Scorpion4ik [409]
3 years ago
13

Signals sent from the human brain through the phrenic nerves induce synchronous spasms of the diaphragm. These spasms are common

ly known as hiccups. The mechanism of hiccupping in humans is remarkably similar to the inhalation of water into the gills of many amphibians, as part of their method for exchanging gases when in aquatic environments. Which statement is true regarding hiccupping in humans?
a. Hiccupping in humans is a residual effect of the amphibian stage of embryonic development.



b. Hiccupping is a vestigial reflex that suggests a common ancestry between humans and amphibians.



c. As in the amphibian, human hiccupping is a method through which organisms efficiently exchange gases with their environment.



d. The presence of hiccupping in humans indicates that humans once inhabited aqueous environments.
Biology
1 answer:
Allisa [31]3 years ago
7 0

Answer:

b. Hiccupping is a vestigial reflex that suggests a common ancestry between humans and amphibians.

Explanation:

Hiccupping refers to an involuntary contraction of the diaphragm that usually occurs several times per minute. Some research has suggested that hiccuping is an evolutionary remnant of amphibian respiration. This is because the mechanism is remarkably similar to the way tadpoles gulp air and water across their gills. This would mean that hiccups exist due to an antecedent to modern lung respiration.

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These muscle cell could be best called
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netineya [11]

Answer:

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Explanation:

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3 0
3 years ago
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What is phrenology, and what role did it play in the development of ideas about brain localization?
Eva8 [605]

Answer:

Hello YOU!

Explanation:

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Phrenology is considered pseudoscience today, but it was actually a vast improvement over that era's prevailing views of personality. ... But phrenology may be undergoing a redemption of sorts. Not the skull part—that's still considered bunk.

Phrenology was particularly popular in the U.S. because it fit so well with the idea of the American dream–the notion that we can accomplish our goals despite a humble heritage. Spurzheim believed that the brain was like a muscle that could be exercised.

4 0
3 years ago
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Kruka [31]

Answer:

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Explanation:

also this is not a biology quiestion

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2 years ago
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