Nervous System (Senses)

What action describes a response to internal stimuli?

• Catching a ball at a baseball game

• Drinking when you are thirsty

• Running at the sight of a wild lion

• Writing a thank you note

Based on the context, Stimulus refers to--

• outside reactions that monitor your bodily systems

• the temperature of the body

• food that gives your body energy

• a thing or event that causes a reaction

What sensory receptor reacts to light?

• Chemoreceptor

• Nociceptor

• Photoreceptor

• Gravoreceptor

What receptor reacts to physical forces?

• Chemoreceptor

• Mechanoreceptor

• Electroreceptor

• Thermoreceptor

What receptor helps us identify changes in smell and taste?

• Thermoreceptors

• Proprioreceptors

• Electroreceptors

• Chemoreceptors

What is a thermoreceptor?

• Responds to body position

• Responds to changes in temperature

• Responds to physical forces including touch and pressure

• Responds to squirrels running outside

What is an example of an internal stimulus?

• I'm so hungry, I can't stand it! My stomach is growling.

• The weather is cold out there.

• Lions and Tigers and Bears..Oh My!

• Those sticker bushes cut my leg!

What is an example of an External Stimuli?

• Lions and Tigers and Bears...Oh my!! Run!

• I'm so hungry, I could eat my shoe.

• This test is causing me stress...I'm sweating!

• I'm asleep.

___________ are nerve endings that send signals to the nervous system when stimulated.

• Cells

• Sensory receptors

• Organ systems

• Brain

Examples of Mechanoreceptors are...

• Touch and pressure

• Taste and smell

• Movement and body position

• Temperature and heat