BIOL 254 Anatomy and Physiology II COMPLETED EXAM 2026 (Complete And Verified Study material) (37pages) LEARNEXAMS

1. A patient presents with decreased bone density and frequent fractures. Which

hormone should be primarily assessed in this patient?

 - A) Insulin

 - B) Thyroxine

 - C) Parathyroid hormone

 - D) Cortisol

 **Answer: C**. Parathyroid hormone regulates calcium levels in the blood, closely

related to bone density and strength.

2. Identify the hormone that influences the basal metabolic rate most significantly.

 - A) Adrenaline

 - B) Insulin

 - C) Thyroxine

 - D) Glucagon

 **Answer: C**. Thyroxine, produced by the thyroid gland, has a significant impact on

basal metabolic rate and metabolism.

3.Which cell type is responsible for the production of antibodies?

 - A) T lymphocytes

 - B) B lymphocytes

 - C) Macrophages

 - D) Neutrophils

 **Answer: B**. B lymphocytes are responsible for the production of antibodies which

play a crucial role in humoral immunity.

4. Which nutrient's absorption is most directly affected by the removal of the ileum?

 - A) Proteins

 - B) Carbohydrates

 - C) Vitamins

 - D) Lipids

 **Answer: C**. The ileum is primarily responsible for the absorption of vitamin B12

and bile salts.

5. During which stage of human development does organogenesis occur?

 - A) Pre-embryonic stage