Digestive, Respiratory, and Circulatory System

why do we eat???

• to mechanically and chemically break down food to provide nutrients for CR and growth

• absorb nutrients

• for short term energy

how do eating carbohydrates improve body

• long term energy that can be stored for later

• short term energy produced during CR

• structure is animals(muscles) during growth and repair

how do eating proteins improve body

• long term energy that can be stored for later

• short term energy produced during CR

• structure is animals(muscles) during growth and repair

how do eating lipids improve body

• long term energy that can be stored for later

• short term energy produced during CR

• structure is animals(muscles) during growth and repair

what is mechanical digestion

• acid and enzymes breaking down food

• physically breaking food into smaller pieces increasing the surface area of the food

• the chewing motion of breaking down food

• chemical reaction using enzymes to break down polymer into monomers

what is chemical digestion

• acid and enzymes breaking down food

• physically breaking food into smaller pieces increasing the surface area of the food

• the chewing motion of breaking down food

• chemical reaction using enzymes to break down polymer into monomers

what is peristalsis

• wave like contractions that move food along the digestive track

• muscles moving together to break down food within the stomach

Answer explanation

this is the reason why you can swallow food upside down

what happens within the mouth

• mechanically digest proteins

• Chemical digestion of carbohydrates (Siliva)

• absorbs water

• mechanically break down food (chewing)

• break down lipids, proteins and carbs

what happens within the esophagus

• mechanically digest proteins

• transports food from the mouth to the stomach with peristalsis

• absorbs water

• mechanically break down food (chewing)

• break down lipids, proteins and carbs

what happens within the stomach

• mechanically digest proteins

• chemically start breaking down proteins with stomach juice (acids)

• absorbs water

• mechanically break churn of the stomach

• break down lipids, proteins and carbs