nervous system

receives, interprets, and responds to signals from outside environment and internal body signals

What is included in the nervous system?

brain, brain stem, spinal cord, nerves / sensory receptors

central nervous system

interprets and sends out responses (brain sends signals through spinal cord to peripheral nervous system)

brain

controls body in thoughts, emotions, behaviors, memories and involuntary movements

frontal lobe

anterior; planning, organizing information, behavior emotions

temporal lobe

on the sides; stores long-term memory, language

parietal lobe

superior posterior; sensory and visual info

occipital lobe

lower posterior; sensory info from the eyes

spinal cord

pathway that connects the brain to the nerves

peripheral nervous system

nerves that send out and receive signals to/from the central nervous system

nerve signals

electrochemical signals that detect and respond to stimuli from the outside world, controls bodily functions

concussion

head impact leads to traumatic brain injury

What are the symptoms of concussion?

headache, dizzy, cognitive/memory deficits, light sensitivity, ears ring, emotional irregularity, nausea

traumatic brain injury (TBI)

outside force to head leads to brain disfunction

chronic traumatic encephalopathy (CTE)

progressive degeneration/ death of nerve cells from repeated head injury

histology

the study of the microscopic anatomy of tissues

Who performs histology?

a medical examiner in the gross examination and a forensic histologist in the microscopic examination

nervous tissue

nervous system; neurons transmit, interpret, and respond to signals

types of muscle tissue

skeletal, smooth, cardiac

skeletal muscle tissue

attaches bones

smooth muscle tissue

organ lining

cardiac muscle tissue

in heart

epithelial tissue

makes up organ and blood vessel outer layers; sheets connected to absorb, secrete, protect, and sense

connective tissue

connects other tissues like the muscles, bones, joints; keeps organs in place; helps tissues stretch