Excretion is the bodys removal of waste products from
- lungs excrete CO2
- skin excretes salts
Main excretory pathway is the urinary system
The What: Convert big food items into small molecules
move them from gut to blood.
The Where: In a long tube called the GI tract = gut.
MOUTH + GI TRACT
MOUTH - where it all begins . The entry point
Why waste time on histology at the
beginning of a human biology course?
If we dont . how do we talk about
- the function of hamstring muscles?
- ACL injuries
- gas exchange in the lungs?
Cells are not usually isolated - inst
The Evolution of Animals
The Origin of Homo
How did animal diversity happen?
All cultures have creation stories.
Conservative Christianity claims a 6-day creation
Less conservative Christians do not accept that.
Assigned & Expected: atomic structure (protons, neutrons, electrons)
chemical bonds (covalent, ionic, H)
Why consider chemistry in a human
Humans are large bags of chemicals
The bag-of-chemicals viewpoint cou