Nervous System and the Eye
Science

The part of the nervous system that controls involuntary actions
Autonomic nervous system
The part of the nervous system that controls involuntary actions autonomic nervous system. It is the system that automatically manages things your body does without you thinking, like breathing, heart rate, and digestion.

The structure that connects the brain to the spinal cord, it includes the pons and the medulla oblongata
Brain stem
The structure that connects the brain to the spinal cord, it includes the pons and the medulla oblongata. Brain stem. The brain stem controls vital functions like breathing and heart rate.

The brain and spinal cord, which form the control center of the nervous system
Central nervous system
The brain and spinal cord, which form the control center of the nervous system. Central nervous system. The central nervous system controls all the activities of the body by processing and sending signals between the brain and body.

The largest part of the brain, it controls the senses, learning, movement, and memory
Cerebrum
The largest part of the brain, it controls the senses, learning, movement, and memory. Cerebrum. The cerebrum is the brain region responsible for processing information and guiding key functions like thinking and moving.

A fluid-filled spiral structure in the ear that converts sound vibration into nerve impulses
Cochlea
A fluid-filled spiral structure in the ear that converts sound vibrations into nerve impulses. Cochlea. The cochlea is a part of the inner ear that helps us hear by transforming sound into signals the brain can understand.

A threadlike extension of a neuron that receives impulses from other neurons
Dendrite
A threadlike extension of a neuron that receives impulses from other neurons. Dendrite. A dendrite is a part of a nerve cell that collects signals from other cells to help the brain communicate and process information.

The nerves that carry signals between the entire body and the central nervous system
Peripheral nervous system
The nerves that carry signals between the entire body and the central nervous system. Peripheral nervous system. It is a network of nerves outside the brain and spine that connects the rest of the body to the central nervous system.

An automatic response to stimulus without conscious control, like a blink or blush
Reflex
An automatic response to stimulus without conscious control, like a blink or blush. Reflex. In science, a reflex is a quick and involuntary reaction of the body to a specific trigger, like a knee-jerk when tapped.