Instructions for the students: Read the questions and answer all the questions independently.
1. Fill in the blanks.
(2
a. The
is important for chewing, mixing and swallowing.
b. The
cells in blood protects us from infection and diseases.
is a muscular sack used to store the food that we eat.
C. is a muscular sack used to store the food that we eat
d. The vessels that carry blood from various organs towards heart are called

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.