History, 06.05.2020 17:06 shelly74

When Jacob starts running, his legs move faster and his heart rate increases. Which types of muscles are involved in these changes?

Skeletal muscles control his leg movement and smooth muscles control his heart rate.
Skeletal muscles control his leg movement and cardiac muscles control his heart rate.
Smooth muscles control his leg movement and cardiac muscles control his heart rate.
Skeletal muscles control both his leg movement and heart rate.

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Answer from: shadowolf017

Option B, Skeletal muscles control his leg movement and cardiac muscles control his heart rate, is the right answer.

Explanation:

It is due to the voluntary muscles that the legs of Jacob move faster and due to the involuntary muscles that his heart rate increases while running. The movement of legs are controlled by the skeletal muscles and the cardiac muscles control his heart rate.

The muscles that are under intentional control and may be controlled at will or when a person wants to control them, are known as the Voluntary muscles. Such muscles are responsible for the movement of human body parts. These muscles are attached to the bones and are also known as the skeletal muscles. At the same time, the involuntary muscles are those muscles that act without any conscious control and cannot be controlled at will. Cardiac muscles is another name for the involuntary muscles.

Therefore, when Jacob starts running his legs move faster due to voluntary muscles and his heart rate increases due to involuntary muscles.

Answer from: Ayallaric6875

The correct answer is B; Skeletal muscles control his leg movement and cardiac muscles control his heart rate.

Explanation:

Answer from: Quest

Hey the answer is the politics of the southern united states generally refers to the political landscape of the southern united states. due to the region's unique cultural and historical heritage, including slavery, the south has been involved in many political issues. some of these issues include states' rights, reconstruction, the civil rights movement and social conservatism. from the 1870s to the 1960s, the region was referred to as the solid south, due to their consistent support for democrats in all elective offices. as a result, its congressmen gained seniority across many terms, thus enabling them to control many congressional committees. in presidential politics, the south began to move away from national democratic loyalties with the dixiecrat movement of 1948 and the barry goldwater presidential campaign of 1964. among white southerners, democratic loyalties first fell away at the presidential level, followed much later at the state and local levels.

Answer from: Quest

you know i think so yes

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When Jacob starts running, his legs move faster and his heart rate increases. Which types of muscles...

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