BELL WORK (Buff Binder – new page): Copy the ENTIRE question below and write your ENTIRE answer: What two reactants (ingredients) are needed for cellular respiration? oxygen and glucose (food)

Today’s Standard: describe the interactions that occur among [animal] systems that perform the functions of…nutrient absorption… (B.10A)

Set up today’s page… Page: 70 Date: Title: Nutrient Absorption Essential Question: How do animal systems interact to absorb nutrients?

What does your body need? Food (carbohydrates, lipids, proteins, vitamins, minerals) Water Oxygen

NUTRIENT ABSORPTION DigestiveRespiratoryCirculatory SYSTEMS INVOLVED

DIGESTIVE SYSTEM Main Parts: – Mouth – Esophagus – Stomach – Small intestine – Large intestine

DIGESTIVE SYSTEM Main Functions: – Mouth breaks down food into smaller pieces – Stomach acids break food into biomolecules (carbs, lipids, proteins) – Small intestine absorbs nutrients – Large intestine absorbs excess water

RESPIRATORY SYSTEM Main Parts: – Nose – Mouth – Lungs – Diaphragm

RESPIRATORY SYSTEM Main Functions: – Nose & mouth filter air as it comes in – Diaphragm contracts and relaxes to move the lungs – Lungs expand and contract for inhaling & exhaling – Oxygen diffuses into blood

CIRCULATORY SYSTEM Main Parts: – Blood vessels – Heart – Red blood cells

what’s in red blood cells white blood cells platelets plasma carbon dioxide digested food waste (urea) hormones oxygen

CIRCULATORY SYSTEM Main Functions: – Heart pumps blood through the body – BLOOD TRANSPORTS: oxygen & carbon dioxide nutrients from the digestive system

INTERACTION: Maintaining Homeostasis Balancing glucose levels in blood pancreas insulin liver takes up glucose for storage cells take up glucose from blood liver releases glucose to blood depress appetite stimulate hunger glucagon

DEBRIEF: Explain how all three systems work together for nutrient absorption in the body. Nutrients are taken in by the digestive system through food, and the respiratory system from the air. The nutrients are moved throughout the body by the circulatory system through the blood.