for my sci final project due tommorow. help please? simple short sweet answers please! im a 7th grader...so no college analysis' please!
2007-06-20 14:29:36 · 6 answers · asked by Shan 1 in Science & Mathematics ➔ Biology
Reflexes are caused by little bundles of nerves along the spinal cord. Thus you can't really control your reflexes; as my 4th grade science teacher put it, let's say you step on a hot coal. It will take about a second for the information to go through your spinal cord to your brain, and another second for the signal to go back down to move the foot. With the bundles of nerves, it takes maybe a quarter of a second to reach the bottom of the spinal cord, and another quarter for another signal to go back. Either way you're on hot coals for quite a long time, but half a second is better than sizzling for 2.
2007-06-20 14:37:39 · answer #1 · answered by sdsmith326 1 · 0⤊ 0⤋
Reflexes are a natural, instinctive response by your Peripheral Nervous System (involuntary) to an outside stimulus. They protect you from hurting yourself. Examples: withdrawing your hand from a hot stove burner, bending a limb or tightening a limb in response to being struck on a reflex point (knee) or in response to a muscle, tendon, or ligament being over-flexed (hyperextended) on purpose (while exercising) or accidently (your neck and head snapping foward and backward rapidly-whiplash-during a car wreck). Good luck on your test!
2007-06-20 21:47:47 · answer #2 · answered by Tina P 1 · 1⤊ 0⤋
Reflexes are important because if your on fire, your reflex is to put out the fire. Therefore, you do not burn to death. Also, if something deadly is coming at you, your reflex is to run, or flinch.
This is the best answer I can think of.
But don't hate me if it's a bad answer.
I'm only in 7th grade!
2007-06-20 21:35:36 · answer #3 · answered by Julie J 3 · 0⤊ 0⤋
Just an example. How long do you want to leave your hand on a hot stove before your reflex pulls it away?
2007-06-20 21:34:20 · answer #4 · answered by jsardi56 7 · 0⤊ 0⤋
reflexes are important because if you don't have them then you will get hurt a lot
2007-06-20 21:34:37 · answer #5 · answered by nick m 1 · 0⤊ 0⤋
SO YOU WOULD NOT BURN YOUR HAND OFF - TOUCH
SO YOU WOULD NOT WALK OFF A CLIFF - SIGHT
SO YOU COULD HEAR THE TRAIN COMING - HEARING
SO YOU COULD SMELL THE BURNING PAPER - SMELL
SO YOU COULD TASTE THE POISON APPLE - TASTE
WITHOUT THEM LIFE WOULD SUCK!!!
2007-06-20 23:15:39 · answer #6 · answered by Anonymous · 0⤊ 0⤋