Summarize the steps of the crossbridge cycle

What will be an ideal response?


During the crossbridge cycle, a myosin head binds to an active site on actin that leads to the sliding of myofilaments. ATP hydrolysis cocks the myosin head into its high energy position. ADP and a phosphate remain attached to the myosin head. The myosin head binds to an active site on actin. When ADP and the phosphate detach from the myosin head, the power stroke occurs in which myosin pulls actin toward the center of the sarcomere. ATP is needed for the release of the myosin head from actin so that this crossbridge cycle can repeat again.

Anatomy & Physiology

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________________________________________ choice feeding is often beneficial in dogs with high requirements such as in pregnancy, lactation, or high physical activity

Fill in the blank(s) with correct word

Anatomy & Physiology

An erection is the result of parasympathetic innervation, and ejaculation is the result of sympathetic innervation.

Answer the following statement true (T) or false (F)

Anatomy & Physiology

Which of the following cytoskeleton components moves the chromosomes during cell division?

A) microfilaments B) intermediate filaments C) thick filaments D) microtubules E) basal bodies

Anatomy & Physiology

In the pulmonary circulation, the _____ carry blood to the lungs

A. carotid sinuses B. pulmonary arteries C. coronary arteries D. superior vena cava and inferior vena cava E. aorta

Anatomy & Physiology