LESSON 1: GASTROINTESTINAL UNIT

1. Good digestion is essential for overall health.

LESSON 2: CARDIOVASCULAR UNIT

1. High blood pressure can increase the risk of heart disease.

2. The aorta is the largest artery in the human body.

3. The superior vena cava carries deoxygenated blood from the upper body to the heart.

4. A cardiac disease can affect the heart’s ability to pump blood effectively.

5. Arteries carry oxygen-rich blood away from the heart to the rest of the body.

LESSON 3: RESPIRATORY UNIT

1. Respiration is the process by which the body takes in oxygen and expels carbon dioxide.

2. The respiratory rate is the number of breaths a person takes per minute.

3. Oxygen is essential for cellular respiration, which produces energy for the body.

4. The lungs are responsible for exchanging oxygen and carbon dioxide in the body.

5. Alveoli are tiny air sacs in the lungs where gas exchange occurs.

LESSON 4: NEUROLOGICAL UNIT

1. The cerebrum controls most of the brain's functions. 

2. The occipital lobe is primarily responsible for processing visual information.

3. He had a severe headache after working for hours without taking a break.

4. A stroke, or cerebrovascular accident, occurs when blood flow to a part of the brain is interrupted.

5. A cerebral aneurysm is a bulge in a weakened brain blood vessel, which can rupture.

             LESSON 5: ORTHOPEDIC UNIT