The type of receptor that alerts Mike's brain when Jean taps him on the shoulder is a mechanoreceptor. Mechanoreceptors are sensory receptors that respond to mechanical pressure or distortion.
They are responsible for detecting touch, pressure, vibration, and stretch. When Jean taps Mike on the shoulder, the mechanoreceptors in his skin are stimulated, which sends signals to his brain indicating that something has touched him. The brain then processes this information and recognizes it as a tap on the shoulder. This is an important sensory function that allows us to perceive the physical world around us and interact with it in meaningful ways. In summary, the mechanoreceptor is the type of receptor that alerts Mike's brain that Jean has tapped him on the shoulder.
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This reflex involves extrinsic eye muscles, and is controlled by the somatic nervous system.
photopupillary
convergence
accommodation pupillary
The reflex that involves extrinsic eye muscles and is controlled by the somatic nervous system is convergence.
Convergence refers to the simultaneous inward movement of both eyes to maintain focus on a near object. This reflex is mediated by the contraction of the medial rectus muscles of the eyes, which are innervated by the oculomotor nerve (cranial nerve III). When an object moves closer to the eyes, the visual stimulus triggers the convergence reflex, causing the eyes to rotate inward and align their visual axes on the object. This allows for binocular vision and proper focusing on nearby objects. The convergence reflex is an example of a voluntary motor response mediated by the somatic nervous system, as it involves the control of skeletal muscles.
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