What is a nutrient which nourishes the body
Glucose
What are the five main components
Mouth, esophagus, stomach, intestines and liver
What is the consumption of food by biting, chewing and swallowing
Ingestion
What is the mechanical and chemical process that changes food into soluble nutrients
Digestion
What happens when the soluble nutrients are taken up by the blood stream the intestines
Absorption
What occurs when undigested food materials, called faces, are passed out of the body through
the anus
Egestion
What five are health issues of the digestive system
Ulcers, anorexia nervosa, diarrhea, liver cirrhosis
Which two systems are closely linked
The circulatory system and the respiratory system
The main three parts of the circulatory system are
The heart, blood vessels and blood
What do humans have between a closed or an open blood system
Humans have a closed blood system
This means that the blood flows around the body contained in the
Blood Vessels
Arteries are blood vessels that transport blood away from the
Heart
Arteries branch into very small blood vessel called
Capillaries
The capillaries lie between the
Cells
The walls of the capillaries consist of a single layer of
Cells
Two things which allows to pass
through them easily
Gases and Nutrients
Which two things pass from the blood across the capillary walls into the cells
Nutrients and Oxygen
Simultaneously carbon dioxide and waste products pass from the cell back into the
Capillaries
What do the veins remove substances from the cells
Carbon Dioxide
The blood is transported towards the heart via blood vessels called
Veins
Two things circulating blood between the
Heart and Lungs
The blood that
goes from the heart to the lungs is low in oxygen but rich in
Carbon Dioxide
The blood that returns to the heart is rich in
Oxygen
The heart pumps oxygen rich blood from the lungs to all
Living Cells
