QUESTION 1

(a) Draw a large and labeled diagram of the digestive system

(b) Explain the homeostatic control of the following in the human body

(i) Blood glucose level

(ii) Internal body temperature

(c) Explain the sequence of events that occur during a cardiac cycle

QUESTION 2

(a) Brieftly describe the different types of skeleton

(b) Describe the structure of a skeletal muscle cell

(c) Describe the sliding filament theory of muscle contraction

QUESTION 3

(a) Outline the functions of B lymphocytes and T lymphocytes and explain how they interact during an immune response

(b) Describe the process of phagocytosis

(c) Differentiate between active and passive immunity

QUESTION 4

(a) Explain how the Human Immunodeficiency Virus (HIV) replicates inside the human body

(b) Describe the modes of transmission of HIV virus

(c) Briefly describe the life cycle of Plasmodium in the human body during malarial infection