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tiny-mole [99]
3 years ago
6

The external intercostals elevate the rib cage during __________.

Biology
1 answer:
slamgirl [31]3 years ago
3 0

Answer:

Inhalation

Explanation:

The intercostal muscles consists of three sets of superimposed muscles located between adjacent ribs. These sets of muscles is made up of the external intercostal, internal intercostal, and innermost intercostal muscles.

The external intercostal muscles are involved in inhalation,and the elevate the rib during this process.

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When large masses of magma solidify far below Earth’s surface, they form igneous rocks that have a _____.
telo118 [61]

Answer:

coarse-grained texture

Explanation:

Igneous rocks come from magma of volcanos and they cool and end up becoming hard. A perfect example of this is granite, which contains a lot of minerals such as quartz and feldspar. Igneous rocks contain a lot of minerals hence why they have a coarse-grained texture.

Hope this helped :)  

5 0
3 years ago
The leg muscles of a sprinter would differ from a marathon runner in that ________. The leg muscles of a sprinter would differ f
andrew11 [14]

Answer:

The correct answer is - per gram, the marathon runner's muscles would contain more myoglobin than the sprinter's muscles.

Explanation:

Marathon runners have smaller leg muscles and thinner quads and calves as marathon runners require slow-twitch muscles while in sprinters the fast-twitch muscle requires. Slow-twitch muscles of marathon runners have more amount of myoglobin, per gram than fast-twitch muscles.

Myoglobin acts as local oxygen storage that provides oxygen to the muscles in case of less oxygen supply than required temporarily and a marathon race is an intense exercise or activity that requires more oxygen.

6 0
3 years ago
The two lower chambers of the human heart are known as:
kolezko [41]

Answer:

b. ventricles

The right and left ventricles

5 0
3 years ago
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Do chromosomes make up genes?
alexandr402 [8]

No genes make up chromosomes. Chromosomes contain DNA sequences and specific sequences aka genes make specific traits.

3 0
3 years ago
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Amy is experimenting to see how a truss (a type of support) can strengthen a bridge. Amy builds several models of bridges out of
love history [14]

Answer:

Increasing the number of trusses increases the strength of the bridge.

Explanation:

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3 years ago
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