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What organ system detects changes, makes decisions, stimulates muscles and glands to respond, and maintains homeostasis?

…………………………….  are the fundamental units of the brain and nervous system, the cells responsible for receiving sensory input from the external world, for sending motor commands to our muscles, and for transforming and relaying the electrical signals at every step in between. (Labeled with letter A)       

The medulla oblongata passes through the foramen magnum of the occipital bone and becomes the …………………………….   (Indicated with the number 16)

What is the type of neuroglia found in the PNS?

What is the name of the structure labeled number 2 in the image below?

It is a thin layer of tissue that lines the back of the eye on the inside. It is located near the optic nerve. The purpose of the …………………. is to receive light that the lens has focused, convert the light into neural signals, and send these signals to the brain for visual recognition. (Indicates with the letter K).  

The inner layer of the eye is the………………….. layer and is known as the …………………  

The ………………….  is a part of the brainstem, situated above the medulla oblongata and below the midbrain.  (Indicates with the number 6)

The ……………………………..  is the white outer coating of the eye. It is tough, fibrous tissue that extends from the cornea (the clear front section of the eye) to the optic nerve at the back of the eye. It gives the eyeball its white color. (Indicated with the number 2)

……………………………… is the anterior to the primary motor cortex, usually in the left hemisphere, and controls muscles needed for speech.