Human reflexes

Intro:when touching a hot pan's handle, your hand draws back st what seems to be simultaneously. This is due to human reflexes. A reflex is triggered by a stimulus(five senses),then interneurons actiavte motor neurons, which creates the jerk away away from the stimulus.

Materials:

cotton balls

gloves

reflex hammer

stopwatch

tranparency sheet

Procedures:

Patellar reflex

Subject:Sit on the edge of a table with legs hanging freely

Using reflex hammer, strike the subject just below the knee cap

Achilles reflex

Subject:Sit on edge of table and remove left shoe or sock

Wearing gloves, researcher holds the bottom of subjects foot and strikes subject Achilles tendon with reflex hammer

Babinski reflex

Subject: Sit on edge of table and remove left shoe or sock

Wearing gloves, researcher holds subject's ankle and stroke the heel up towars the ball of the subject's foot

Pupillary reflex

Subject:closes one eye for a minute

After the minute has passed, the researcher looks at both of the subject's eyes before allowing the subject to open the closed eye

Blink reflex

Subject: holds a tranparent sheet in front of there face

The researcher will throw only a cotton ball towards the subject's eye

Saftey precautions:

Wash hands with soap before test, strike hammer softly(NOT WITH EXCESSIVE FORCE), and follow the guidelines