Organs Of The Organ Systems

1. Which of the following is a major organ of the Respiratory System and moves air into and out of the body?

Appendix

Artery

Lung

Lymph Node

The lung moves air into and out of the body.

Explanation

The lung moves air into and out of the body.

2. Which of the following is a major organ of the Nervous System that helps send signals from nerves to the brain?

Spinal Cord

Lymphatic Vessels

Dermis

Renal Gland

The spinal cord helps send and receive signals between the brain and the nerves.

Explanation

The spinal cord helps send and receive signals between the brain and the nerves.

3. Which organ makes sex cells for males?

Prostate Gland

Ovaries

Testes

Seminal Vesicle

The testes make male sex cells, or sperm.

Explanation

The testes make male sex cells, or sperm.

4. Glands that make hormones are part of which organ system?

Lymphatic

Nervous

Respiratory

Endocrine

The endocrine system makes hormones that control all body functions like growth and behavior.

Explanation

The endocrine system makes hormones that control all body functions like growth and behavior.

5. Which organ of the Urinary System helps filter blood?

Ovaries

Pancreas

Liver

Kidney

The kidney helps filter and clean blood.

Explanation

The kidney helps filter and clean blood.

6. Which organ of the Female Reproductive System holds and grows the fetus (baby)?

Ovary

Stomach

Cervix

Uterus

The uterus holds the fetus and allows it to grow.

Explanation

The uterus holds the fetus and allows it to grow.

7. Which organ of the Digestive System absorbs nutrients into the blood so the body can use them?

Mouth

Stomach

Small Intestine

Large Intestine

The small intestine absorbs nutrients into the blood.

Explanation

The small intestine absorbs nutrients into the blood.

8. White blood cells are made in which organ?

Lymph Nodes

Testes

Bones

Veins

White blood cells are made by Lymph Nodes in the Lymphatic System.

Explanation

White blood cells are made by Lymph Nodes in the Lymphatic System.

9. Which organ of the Digestive System breaks down food into nutrients?

Esophagus

Stomach

Small intestine

Large Intestine

The stomach breaks down food into nutrients.

Explanation

The stomach breaks down food into nutrients.

10. Which organ of the Respiratory System exchanges oxygen and carbon dioxide with the blood?

Trachea

Bronchi

Nasal Passages

Alveoli

The alveoli exchange oxygen and carbon dioxide between the blood and the air.

Explanation

The alveoli exchange oxygen and carbon dioxide between the blood and the air.

11. Which organ makes blood?

Heart

Lung

Small Intestine

Bone marrow

The bone marrow is the primary organ responsible for producing blood cells. It is a soft, spongy tissue found within the cavities of bones, particularly in the long bones such as the femur and pelvis. Within the bone marrow, specialized cells called hematopoietic stem cells continuously divide and differentiate to form various types of blood cells, including red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). These blood cells are essential for oxygen transport, immune function, and blood clotting, among other vital physiological processes.

Explanation

The bone marrow is the primary organ responsible for producing blood cells. It is a soft, spongy tissue found within the cavities of bones, particularly in the long bones such as the femur and pelvis. Within the bone marrow, specialized cells called hematopoietic stem cells continuously divide and differentiate to form various types of blood cells, including red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). These blood cells are essential for oxygen transport, immune function, and blood clotting, among other vital physiological processes.