Pages 49-57 Test Flashcards
Spinal Cord
Tissues connecting the brain to the back
Ganglion
Structure with a number of nerve cell bodies
The human body was designed by the Creator God and it is more than just a collection of ______.
Chemicals
Without the ________ cord the brain would be unable to receive sensory info from your body or tell your body what to do
Spinal
ALS
Nervous system disease affecting nerve cells in the brain
Amyotrophic lateral sclerosis (als) is aka Lou ________ disease.
Gehrig’s
The dorsal root ganglion contains the cell bodies of sensory _______.
Nerves
Peripheral nervous system
Part of nervous system outside central nervous system
Olfactory (I) nerves
Related to smell
Optic (II) nerves
Relating to vision
Bell’s palsy
Muscle weakness on 1 side of the face
The ____ nerve carries nerve impulses for vision
Optic
Bell’s palsy is caused by inflammation of the facial nerve, usually due to a ____ infection
Viral
Carpal tunnel syndrome
Median nerve is pressed at wrist
Shingles
Painful inflammation of nerve
Reflex
Automatic action of organ or muscle
With an _____ reflex you remain unaware of what happened
Autonomic
Neurons of the somatic motor system form networks of fibers called _______, each located near the effector organ or region it serves.
Plexuses
The sympathetic nervous system is called the “ _____ or flight” system
Fight
Mechanoreceptors
Sense mechanical stress, like pressure
Chemoreceptors
Special cells sensitive to changes in chemical or substance
Photoreceptors
Contained in retina of eye and senses light
Thermorecptors
Respond to temperature changes
The special senses are taste sight smell hearing and ____
Balance
If English odorant molecules trigger the ______ cell an impulse is sent down the entire length of the neuron
Receptor
Fungiform papillae
Mushroom shaped and scattered along the surface of the tongue
Umami
Taste produced by amino acids
Our ability to taste depends on our ability to detect, then react to certain ________ in our environment
Chemicals
Taste ___ are found in the side walls of the foliate and circumvallate papillae
Buds
Tympanic membrane
A.k.a. eardrum, vibrate when sound hits it, and it’s boundary between entering the middle ear 
Cochlea
Spiral chamber made of bone, snail shell
The external auditory canal is a tube through which sound waves move towards the tympanic membrane (_____) 
Eardrum
The ________  that start on the eardrum, are going to be transmitted to the hammer, then to the anvil, then to the stirrup and to the oval window 
Vibrations
Sound
Series of vibrations
Hearing
Ability to convert sound waves to action potentials to be transmitted to the brain
Vertigo
Sensation of moving, when not actually moving; dizziness
Labyrinthitis
Inflammation of inner ear
When we hear something we are sensing sound _______ from the environment 
Waves
The greater the_____ the louder, the sound
Amplitude
The loud of the sound reaching the tympanic membrane the _______ the membrane is pushed while vibrates
Farther
When the tympanic membrane vibrates causes movement in 3 _____ of the middle ear
Bones
The basilar membrane is ______ to respond to different frequencies along the length
Tuned
Corneal abrasion
Scratch on eye
Glaucoma
Drainage canal is blocked because too much fluid stays in the eye and damages the optic nerve
Cataract
Clouding of lens of eye
The outer layer of the eye consist of two parts; the sclera and the ______
Cornea
The iris is around flat layer of smooth muscle with an opening in the middle called ______
Pupil
The ____ are the receptors that are most sensitive to light. Without them, we cannot see in the light or at night
Rods
There are three types of – – – ; blue ones which are obviously sensitive to blue light, red ones which sense, red light and green ones which detect green light
Cones
When light passes through a transparent object, it can be bent or _____
Refracted
