Feedback Loops
Your body gets too hot, so you start sweating. The goal is to bring your temperature back down. What type of feedback?
Negative Feedback
Entering - Oxygen
Leaving - Carbon Dioxide
What system is this?
Respiratory System
Your body works hard to keep its internal condition stable. Homeostasis or Nah?
Homeostasis
You walk outside and feel the cold air. What is the cold temperature in the process?
Stimulus
What sport does Mr. Amen coach?
Golf
Your body temperature goes up; you sweat, and your temperature goes down. Is the response making the original change bigger or smaller?
Smaller
Oxygen enters your blood, and this system delivers it to your body.
What System?
Circulatory System
It's freezing outside, and your body stays neutral. Homeostasis or Nah?
Nah
You feel cold and start shivering. Shivering is what part of the process?
Response
What helmet size was Mr. Amen when he did Little League?
XL helmet
One change causes even MORE of the same change. Is this positive or negative feedback?
Positive Feedback
You eat food and your body needs to break it down into nutrients for the body. Which body system is mainly responsible?
DOUBLE POINTS!! - What other systems are being used??
Main - Digestive System
Other systems involved:
Circulatory system: Carries nutrients through the blood to cells throughout the body.
Muscular system: Helps move food through the digestive tract.
Nervous system: Controls and coordinates digestion.
Endocrine system: Releases hormones that help regulate digestion.
Respiratory system: Provides oxygen so cells can use nutrients for energy.
A lizard is outside, and suddenly it gets super hot. The lizard moves into the shade. Homeostasis or Nah?
DOUBLE POINTS!! - What is the stimulus and response for the lizard?
Nah
Stimulus - Hot weather increases body temperature
Response - Moving into the shade to cool down
You touch a hot pan and immediately pull your hand away. What is the stimulus?
Heat from the pan
What did Mr. Amen get chased with when he was a kid?
A goose
A student gets nervous before a presentation. Their heart rate rises, but after the presentation, it returns to normal. What type of feedback?
Negative Feedback
You get pinched by a crab at the beach. Your brain sends signals telling your body to react to the pinch. Which system is responsible for sending these signals?
Nervous System
Your body temperature rises; your body doesn't sweat, though. Homeostasis or Nah?
Nah
You're building a snowman when, all of a sudden, it gets super cold, so you go inside where it's nice and warm. What is the stimulus and response?
Stimulus - Body temperature decreases
Response - Go inside to the warm house
What is Mr. Amen's dog's name?
Maev McGonagall Amen
During childbirth, contractions cause the body to release hormones that make the contractions stronger. What type of feedback is this? Explain.
Positive feedback because the response increases and strengthens the original change.
You breathe in oxygen; the oxygen enters your blood and turns it into nutrients. What TWO systems are working together?
Respiratory system and Circulatory system
Why is osmoregulation different in saltwater fishes than in freshwater fishes? Homeostasis or Nah? DOUBLE POINTS!! - Explain why?
Homeostasis
Why? - It's different because saltwater fish lose water and gain salt from their environment, while freshwater fish gain water and lose salt. They use homeostasis to keep their internal water and salt levels balanced.
Put in order:
Response, receptor, effector, stimulus, and control center
Stimulus --> Receptor --> Control Center --> Effector --> Response
What is Mr. Amen's full name?
DOUBLE POINTS!! - What is his middle name?
Kurt Robert Amen