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Myosin

A myosin molecule has a long tail and a hinged globular head which allows the head to move back and forwards and bend. The head has binding sites for ATP and actin. The tails align in parallel to form a myosin filament.The myosin tails point towards the centre of the sarcomere, whilst the heads point towards the Z-lines.

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Specification: OCR Biology A (H420), A-level, 5.1.5 Plant and animal responses. Topic: Muscles.

Key terms in this lesson

Hypothalamus
A region of the brain that regulates body temperature, water balance and other homeostatic processes, and controls the pituitary gland.
Effector
A muscle or gland that brings about a response to a stimulus.
Autonomic nervous system
The part of the peripheral nervous system that controls involuntary functions such as those of cardiac muscle, smooth muscle and glands.

More in Muscles

All 15 lessons in Muscles · All OCR A-level Biology topics