The Nervous System
What are the two main systems of the Nervous System?
Central Nervous System (CNS) and Peripheral Nervous System (PNS)
Then membrane that protects the brain and spinal cord
Meninges
Inflammation of the meninges
Meningitis
Uses olfactory receptors to send information to the brain.
The nose
What is otitis externa?
Outer ear infection/ swimmer's ear
Neuron
What are the 4 major parts of the brain?
Cerebrum, Diencephalon, Brain stem, Cerebellum
Occurs when inadequate blood supply affects a portion of the brain
Stroke
Area of the eye that can become distorted causing vision problems
lens
Caused by an irregular shape of the lens and or cornea leading to blurred vision.
Astigmatism
How is the PNS divided?
Somatic Nervous System and Autonomic Nervous System
How many cranial nerves are there?
12
Motor system disorder that can cause tremors, stiffness, and lack of coordination and balance.
Parkinson's
Name the accessory organs of the eye
Orbit and eyebrows, eyelids and eyelashes, conjunctiva, lacrimal apparatus, extrinsic eye muscles
Hearing loss caused by the aging process
Presbycusis
________ nerves are sensory nerves that take information to the brain.
_________ nerves are motor nerve that take impulses away from the brain.
Afferent
Efferent
How many pairs of spinal nerves are there?
31
Progressive, degenerative disorder characterized by memory loss, confusion, personality changes, language deterioration, impaired judgement, and restlessness.
Alzheimer's Disease
Names of the tiny bones of the ear
Ossicles: malleus, stapes, incus
If multiple layers of this separate it is considered an emergency because if not treated can lead to blindness
Retina
Name of secondary cells of the nervous system.
Neuroglia cells
In what portion of the brain would you find the cortex and the lateral ventricles?
Cerebrum
Fatal disorder that causes degeneration of neurons in spinal cord and brain due to loss of myelin. Causes cramping of muscles, breathing difficulty, and muscle paralysis. Also known as Lou Gehrig's disease
Amyotrophic Lateral Sclerosis (ALS)
Name of the system of chambers and tubes of the inner ear
labryinth
Benign tumor of the cranial nerve involved in hearing and balance