pupillary muscles

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• Pupillary reflex — refers to one of the reflexes associated with pupillary function. Types include: Pupillary light reflex Accommodation reflex Although pupillary dilation is not usually called a reflex , it is still usually considered a part of this topic.… …   Wikipedia

• Pupillary light reflex — The pupillary light reflex is the reduction of pupil size in response to light.The pattern of pupillary response to light can help determine which of the cranial nerves is damaged. TypesThere are two types of response assessed for each eye:cite… …   Wikipedia

• autonomic nervous system — the part of the peripheral nervous system responsible for the control of involuntary muscles (e.g. the heart, bladder, bowels) and hence those bodily functions that are not consciously directed, including regular beating of the heart, intestinal… …   Medical dictionary

• autonomic nervous system — the part of the peripheral nervous system responsible for the control of involuntary muscles (e.g. the heart, bladder, bowels) and hence those bodily functions that are not consciously directed, including regular beating of the heart, intestinal… …   The new mediacal dictionary

• Reflex — A reaction that is involuntary. The corneal reflex is the blink that occurs with irritation of the eye. The nasal reflex is a sneeze. * * * 1. An involuntary reaction in response to a stimulus applied to the periphery and transmitted to the… …   Medical dictionary

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   Universalium

• Iris (anatomy) — Iris The iris is the blue area. The other structures visible are the pupil center and the white sclera surrounding the iris. The overlying cornea is pictured, but not visible, as it is transparent …   Wikipedia

• reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… …   Medical dictionary

• Oculomotor nerve — Nerve: Oculomotor nerve Nerves of the orbit. Seen from above …   Wikipedia

• Vestibulo-ocular reflex — The vestibulo ocular reflex. A rotation of the head is detected, which triggers an inhibitory signal to the extraocular muscles on one side and an excitatory signal to the muscles on the other side. The result is a compensatory movement of the… …   Wikipedia