Answer to Question 1
The cardiovascular system is made up of:
1 . The four-chambered heart
2 . The blood vessels
3 . The blood, made up of plasma and the formed elements (red blood cells, white blood cells, and platelets)
Answer to Question 2
The layers of the gastrointestinal tract in order from inside to outside are:
1 . Epithelium
2 . Glandular
3 . Circular and longitudinal muscle
4 . External connective tissue layer