PN AP Final Exam 2025 at Jersey College School of Nursing

The Correct Answer is:

A. Larynx.

Detailed Explanation:

The larynx, commonly called the voice box, houses the vocal folds (vocal cords), which are responsible for sound production. When air passes through the larynx, the vocal folds vibrate, creating sound that is modified by the mouth, tongue, and lips during speech. The larynx also plays an important role in protecting the airway by closing during swallowing to prevent aspiration. It is located between the pharynx and the trachea in the upper respiratory tract.

The Correct Answer is:

B. Spermalogenesis.

Detailed Explanation:

Spermatogenesis (often mistakenly written as “spermalogenesis”) is the correct term that refers to the creation and development of sperm cells within the seminiferous tubules of the testes. This process involves several stages—from spermatogonia (immature germ cells) to mature spermatozoa—and is regulated by hormones such as testosterone and follicle-stimulating hormone (FSH). The process ensures the continual production of viable sperm necessary for male fertility.

The Correct Answer is:

D. Exocrine.

Detailed Explanation:

Exocrine glands produce and release their secretions through ducts to the surface of an organ or outside the body. Examples include sweat glands, salivary glands, and sebaceous (oil) glands. Their secretions serve various purposes such as cooling the body, aiding digestion, or lubricating tissues.

In contrast, endocrine glands secrete hormones directly into the bloodstream (not through ducts). Islet cells are endocrine cells in the pancreas that secrete insulin and glucagon, while hormones are the chemical messengers secreted by endocrine glands.

The Correct Answer is:

B. T-cell.

Detailed Explanation:

T-cells, specifically cytotoxic T-cells (CD8+ cells), are immune cells that directly attack and destroy infected or abnormal cells through cell-to-cell combat. They recognize antigens presented on infected cells and release enzymes that induce cell death (apoptosis). This process is essential in defending the body against viruses, cancer cells, and intracellular pathogens. B-cells produce antibodies, antigens are foreign substances that trigger immune responses, and immunoglobulins are the antibodies themselves—none of which engage in direct killing.

The Correct Answer is:

B. Pleura.

Detailed Explanation:

The pleura is a double-layered membrane that surrounds and protects each lung. It consists of two parts: the visceral pleura, which covers the surface of the lungs, and the parietal pleura, which lines the chest wall and diaphragm. Between these layers is the pleural cavity, filled with a small amount of fluid that reduces friction during breathing. The alveoli are air sacs for gas exchange, the rugae are folds in the stomach, and the mediastinum is the space between the lungs containing the heart and major vessel

The Correct Answers are:

C. Brain and E. Spinal cord.

C. Brain:

The brain is a major component of the central nervous system (CNS) and serves as the control center for thought, memory, sensation, and motor activity. It processes information from the body and coordinates responses through nerve signals.

E. Spinal cord:

The spinal cord connects the brain to the peripheral nervous system and functions as a pathway for nerve impulses. It transmits sensory information to the brain and motor commands from the brain to the body.

The Correct Answer is:

B. Lipids.

Detailed Explanation:

Lipids are organic compounds that are insoluble in water but soluble in nonpolar solvents like alcohol or ether. They include fats, oils, phospholipids, and steroids, and serve as the body’s main form of long-term energy storage. Lipids also provide insulation, protection for organs, and are essential components of cell membranes. In contrast, carbohydrates and proteins are water-soluble, and nucleotides are the building blocks of nucleic acids such as DNA and RNA.

The Correct Answer is:

D. Fertilization.

Detailed Explanation:

Fertilization is the process by which a sperm cell unites with an ovum (egg cell) to form a single cell called a zygote. This event typically occurs in the fallopian tube. The zygote contains a complete set of 46 chromosomes—half from the mother and half from the father—forming the genetic blueprint for a new individual. After fertilization, the zygote begins to divide and eventually implants into the uterine wall to begin embryonic development.

The Correct Answer is:

C. Arteriosclerosis.

Detailed Explanation:

Arteriosclerosis is the medical term for the hardening and thickening of the arterial walls. This condition causes the arteries to lose elasticity, reducing their ability to carry blood efficiently. It often results from aging or the buildup of fatty deposits (atherosclerosis) within the arterial walls, which can lead to hypertension, coronary artery disease, or stroke. In contrast, angina refers to chest pain from reduced blood flow, myocardial infarction is a heart attack, and irregular heart rhythm describes abnormal electrical activity in the heart.