Nervous System Part #1
What is a nerve cell called?
neuron
all parts outside the central nervous system
What does the myelin sheath do?
speed up a electrical impulse
How many bone are in the adult human body?
206
Where is the mid line?
down the middle of your body(head to toes)
What does the central nervous system consist of?
the brain and spinal cord
What ions are involved in electrical impulses?
What are your chest muscles?
pectoralis major and pectoralis minor
What is a compound fracture?
broken bone ends penetrate thru skin
What is simple squamous cell?
one layer flat cell
What part of the nerve cell first receive the electrical impulse?
dendrites
What are the 3 functions of the nervous system?
sensory input, integration, motor output
How many myofilament within each sarcomere and name them?
2, thick and thin myofilaments
What happens to the epiphyseal plate after puberty?
the bone stops growing and turns to the epiphyseal line
Where does appendicitis occur vs where you feel the pain?
happens in the right lower quadrant feel pain in left upper quadrant
What is required for the action potential to be initiated?
a strong stimulus that causes the polarity of the membrane to be completely reversed and reach threshold potential
What parts of the brain would be engaged when reading in class?
cerebral cortex- Broca's area
What gives the skeletal muscle fibers the striation appearance?
What are the layers of a long bone?
compact bone and then spongy bone
What are the six levels of organization?
chemical, cellular, tissue, organ, organ system, organism
What is the purpose of astrocytes?
form a living barrier between capillaries and neurons
criss cross wiring
What are the parts of the skeletal muscle biggest to smallest?
muscle belly, epimysium, fascicle, muscle fiber cells
What are the six bones in the vertebral column?
cervical, thoracic, lumbar, sacral, coccyx
What are the four anatomic planes?
median, sagital, coronal, transverse