Test 2/23/13 part 2 Flashcards
Name the three sides of the “Health Triangle”
PHYSICAL MENTAL AND SOCIAL/EMOTIONAL
Describe the function of the SYMPATHETIC NERVOUS SYSTEM
TO GET YOU READY TO RESPOND TO DANGER: FASTER HEART RATE, FASTER BREATHING, MORE BLOOD TO MUSCLES, LESS TO DIGESTIVE SYSTEM
What is another name for the response of SYMPATHETIC NERVOUS SYSTEM
fight or flight
Name some physiological changes that occur in your body when you activate the sympathetic nervous system
FASTER HEART RATE, FASTER BREATHING, MORE BLOOD TO MUSCLES, LESS TO DIGESTIVE SYSTEM AND “GOOSEFLESH”
What is a reflex?
A SIMPLE, AUTOMATIC (UNLEARNED) RESPONSE TO A STIMULUS
What is the function of most reflexes? The best answer to this would be a one word answer
protection
What three things in your body protect your brain?
SKULL, FLUID AND MEMBRANES
What three things in your body protect our spinal cord?
VERTEBRAE, FLUID AND MEMBRANES
What can you do when biking, skateboarding or roller-blading, to protect your brain?
wear a helmet
How can you reduce the risk of a spinal cord injury when riding in a car?
wear a seatbelt
How do the eyes adjust when we go from indoors to bright sunlight?
PUPILS CONTRACT SO LESS LIGHT CAN ENTER EYE
How do the eyes adjust when we enter a dark theater?
PUPILS DILATE SO MORE LIGHT GETS IN EYE
tell how the cornea is kept moist
YOU MAKE TEARS AND THE LIDS OF YOUR EYES ACT AS WINDSHIELD WIPERS WITH YOUR TEARS. BLINKING SPREADS THE TEARS OVER THE CORNEA.
See diagram for eye
page 7 (don’t need to know red)
What are the two functions of the cornea
LETS LIGHT IN AND HELPS FOCUS
What is the function of the Iris
REGULATES SIZE OF PUPIL
What is the function of the pupil
Lets light in
What is the function of the lens
focuses images
What is the function of the Retina (rods and cones)
THESE ARE THE CELLS SENSITIVE TO LIGHT – RODS FOR BLACK AND WHITE AND CONES FOR COLOR
What is the function of the Optic Nerve
CARRIES MESSAGES OF LIGHT STIMULATION TO BRAIN
