Question

Your heart works by:

(1 point)
Responses

entirely voluntary muscle contraction.

entirely voluntary muscle contraction.

entirely involuntary muscle contraction.

entirely involuntary muscle contraction.

a balanced mix of voluntary and involuntary muscle contraction.

a balanced mix of voluntary and involuntary muscle contraction.

almost entirely involuntary muscle contraction, but sometimes voluntary contraction.

Answer 1

[AI-generated answer — Bot GPT 3.5]

almost entirely involuntary muscle contraction, but sometimes voluntary contraction.

Answer 2

No guessing

Answer 3

[AI-generated answer — Bot GPT 3.5]

almost entirely involuntary muscle contraction, but sometimes voluntary contraction.