Question

Question 7 Which of the following are true regarding cardiac muscle contraction. Select all that apply Calcium must diffuse greater distances from its source to bind troponin in cardiac muscle Cardiac muscle contracts more slowly than skeletal muscle Differences in the rate of cardiac and skeletal muscles can be partially explained by differences in membrane proteins The smaller motor units of cardiac muscle allow for greater control of cardiac muscle

          Question 7
Which of the following are true regarding cardiac muscle contraction. Select all that apply
Calcium must diffuse greater distances from its source to bind troponin in cardiac muscle
Cardiac muscle contracts more slowly than skeletal muscle
Differences in the rate of cardiac and skeletal muscles can be partially explained by differences in membrane proteins
The smaller motor units of cardiac muscle allow for greater control of cardiac muscle

Question 7
Which of the following are true regarding cardiac muscle contraction. Select all that apply
Calcium must diffuse greater distances from its source to bind troponin in cardiac muscle
Cardiac muscle contracts more slowly than skeletal muscle
Differences in the rate of cardiac and skeletal muscles can be partially explained by differences in membrane proteins
The smaller motor units of cardiac muscle allow for greater control of cardiac muscle

Added by Heather K.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

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Solved by Expert Josee Pacheco

Step 1

This statement is true. In cardiac muscle, calcium ions need to diffuse further distances from the sarcoplasmic reticulum to bind to troponin and initiate muscle contraction. - Cardiac muscle contracts more slowly than skeletal muscle. This statement is true. Show more…

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Which of the following are true regarding cardiac muscle contraction? Select all that apply: - Calcium must diffuse greater distances from its source to bind troponin in cardiac muscle. - Cardiac muscle contracts more slowly than skeletal muscle. - Differences in the rate of cardiac and skeletal muscles can be partially explained by differences in membrane proteins. - The smaller motor units of cardiac muscle allow for greater control of cardiac muscle.