Ch 9 Quiz Flashcards
(28 cards)
The two main control systems in the Body
Nervous system and endocrine system
The two types of cells that compose nervous tissue
Neuroglia, neurons
Specialized cells that do all the support activities for the nervous system
Neuroglia
The poison a puffer fish gives off
Tetrodotoxin
Two types of seizures
Petitmal (mild) and grand mal (severe)
Three portions of the brain stem
Midbrain, pons, medulla oblongata
Three of the common neurotransmitters
Epinephrine , endorphins, serotonin
Hallow tube running inside the vertebral column , from the foremen of the skull to the second lumbar vertebrae
Spinal cord
Two bioterrorism chemicals that inhibit acetycholinesterase
Organophosphate insecticides and sarin nerve gas
Series of protective membranes that surround the brain and spinal cord
Meninges
How many neurons in the human brain
100 billion
Average weight of the human brain
3 pounds
Three familiar reflexes
Withdrawal reflex -keeps you straight
Vestibular reflex - keeps you vertical
Startle reflex - causes you to jump at loud sounds
Two of the most common causes of spinal cord injuries
Automobile accident, fall
Three main sections a brain has that can be seen externally
Cerebrum , cerebellum , brain stem
The 5 lobes of the cerebrum
Frontal , parietal, occipital , temporal , insula
How are the lobes of the cerebrum named
According to the skull bones that cover them
How many sections the brain stem can be divided into
Three sections
Fluid filled cavities in the brain
Ventricles
Composed of the nerves outside the brain and spinal cord
Peripheral nervous system
Similar to fingerprints the - and - in the cerebral cortex are different on every brain
Sulci and gyri
Neuron that receives info from the environment or from other cells
Dendrite
Special chemical used to send signals across the synapse
Neurotransmitter
Type of paralysis were muscles are floppy and reflexes are decreased or absent
Flaccid
