Question

name: ____________ class: __________ date: ____________ match each word on the left with its best fit on the right (1 point each).

1. respiratory system \ta. includes the uterus in females and the testes in males
2. circulatory system \tb. consists of the central and peripheral systems
3. nervous system \tc. includes cardiac, smooth, and skeletal types
4. digestive system \td. releases hormones
5. muscular system \te. includes the mouth, nose, trachea, lungs, and diaphragm
6. endocrine system \tf. cushions the organs and provides a barrier
7. reproductive system \tg. moves blood and oxygen through the body
8. integumentary system \th. includes the tonsils, lymph nodes, spleen, appendix, and bone marrow
9. excretory system \ti. includes the kidneys
10. immune system \tj. gets nutrients into the body
11. describe the difference between pulmonary circulation and coronary circulation. (4 points)
12. describe each of the three types of muscle tissue. (6 points)

Explanation:

Matching Questions (1 - 10)

1. Respiratory system: The respiratory system is responsible for breathing, and its components include the mouth, nose, trachea, lungs, and diaphragm. So match with e.
2. Circulatory system: The circulatory system’s main function is to move blood and oxygen throughout the body. So match with g.
3. Nervous system: The nervous system is divided into the central (brain and spinal cord) and peripheral (nerves) systems. So match with b.
4. Digestive system: The digestive system’s role is to break down food and get nutrients into the body. So match with j.
5. Muscular system: The muscular system has three types of muscles: cardiac, smooth, and skeletal. So match with c.
6. Endocrine system: The endocrine system is made up of glands that release hormones. So match with d.
7. Reproductive system: The reproductive system includes reproductive organs like the uterus (female) and testes (male). So match with a.
8. Integumentary system: The integumentary system (skin, hair, nails) cushions organs and provides a protective barrier. So match with f.
9. Excretory system: The excretory system, which includes the kidneys, removes waste from the body. So match with i.
10. Immune system: The immune system includes structures like tonsils, lymph nodes, spleen, appendix, and bone marrow to fight infection. So match with h.

Question 11: Difference between Pulmonary and Coronary Circulation

• Pulmonary Circulation: This is the circulation of blood between the heart and the lungs. Deoxygenated blood from the right side of the heart is sent to the lungs, where it picks up oxygen and releases carbon dioxide. Oxygenated blood then returns to the left side of the heart.
• Coronary Circulation: This is the circulation of blood within the heart muscle (myocardium) itself. The coronary arteries supply oxygen - rich blood to the heart muscle, and the coronary veins carry oxygen - poor blood away from it. The purpose of coronary circulation is to provide the heart muscle with the oxygen and nutrients it needs to function.

Question 12: Three Types of Muscle Tissue

1. Skeletal Muscle:

• It is attached to bones (or sometimes to skin, like in facial muscles).
• It is striated (has a striped appearance under a microscope) and voluntary, meaning we can control its contraction (e.g., when we move our arms or legs).
• Cells are long, cylindrical, and multinucleated (have more than one nucleus per cell).

1. Cardiac Muscle:

• It is found only in the heart.
• It is striated and involuntary (we cannot consciously control its contraction).
• Cells are branched, have a single nucleus, and are connected by intercalated discs, which help in the rapid transmission of electrical signals for coordinated heartbeats.

1. Smooth Muscle:

• It is found in the walls of internal organs like the stomach, intestines, blood vessels, and uterus.
• It is non - striated and involuntary.
• Cells are spindle - shaped (tapering at both ends) and have a single nucleus.

Answer:

s for Matching (1 - 10)

1. e
2. g
3. b
4. j
5. c
6. d
7. a
8. f
9. i
10. h