What is the receptor for blinking?

The corneal blink reflex is caused by a loop between the trigeminal sensory nerves and the facial motor (VII) nerve innervation of the orbicularis oculi muscles. The reflex activates when a sensory stimulus contacts either free nerve endings or mechanoreceptors within the epithelium of the cornea.

What is the effector in the pupillary light reflex?

What is the receptor and effector in the pupillary reflex? The retina is the receptor and the effector is the smooth muscle of the iris. They both work together to restrict or enlarge the pupil according to how bright the light it.

What are the effectors of eyes?

The eye responds to bright light to protect the retina from damageThe bright light triggers a reflex that makes the pupils smaller, meaning less light enters the eyeAs with all reflexes, there is a stimulus, receptor and effectorThe stimulus is the light, the receptor is the light receptors in the eye and the effectors …

What nerves are involved in blinking?

The cranial nerves involved in the eye blink response and pupillary response are the optic, oculomotor, trigeminal and facial nerves.

What type of reflex is blinking?

The corneal reflex, also known as the blink reflex or eyelid reflex, is an involuntary blinking of the eyelids elicited by stimulation of the cornea (such as by touching or by a foreign body), though could result from any peripheral stimulus.

What affects blink rate?

1 However, blinks are highly variable across tasks, such as reading, computer use, TV, driving, conversation and gazing. 2 Blinking is also influenced by internal factors including fatigue, medications, stress and affective state.

Which nerve transmits motor information to the effector in the light pupillary reflex?

…the best-known reflex is the pupillary light reflex. If a light is flashed near one eye, the pupils of both eyes contract. Light is the stimulus; impulses reach the brain via the optic nerve; and the response is conveyed to the pupillary musculature by autonomic nerves that supply the eye.…

What is the receptor for the Ciliospinal reflex?

The ciliospinal reflex is pupillary dilation in response to noxious stimuli, such as pinching, to the face, neck, or upper trunk.. Pathway: The trigeminal nerve or cervical pain fibers, which are part of the lateral spinothalamic tract, carry the afferent inputs of the ciliospinal reflex.

Is the iris an effector?

It opens the pupil wider in dim conditions, and reduces the opening when it gets brighter. This is a reflex action – a function performed by the nervous system and effectors (in this case the antagonistic muscles of the iris) without any thought.

Where are the receptors for the pupil iris reflex?

retina
Photoreceptor cells in the outer layers of the retina, which are called rods and cones, convert light stimuli into neuronal impulses. These signals are then relayed to the bipolar cells, which interact with ganglion cells, which in turn coalesce to form the optic disc and optic nerve (CN II).

What part of the brain controls reflex actions for blinking?

The Hindbrain The pons and the medulla, along with the midbrain, are often called the brainstem. The brainstem takes in, sends out, and coordinates the brain’s messages. It also controls many of the body’s automatic functions, like breathing, heart rate, blood pressure, swallowing, digestion, and blinking.