Which sensory receptor is primarily responsible for detecting changes in temperature?

A. Chemoreceptors: Chemoreceptors detect chemical changes in the environment, including molecules responsible for taste and smell. They convert chemical stimuli into nerve impulses that the brain interprets as specific flavors or odors.

B. Mechanoreceptors: Mechanoreceptors respond to mechanical pressure or distortion, such as touch, vibration, and sound. They are not involved in detecting chemical stimuli like taste or smell.

C. Photoreceptors: Photoreceptors are specialized cells in the retina that respond to light. They enable vision but do not respond to chemical stimuli in the environment.

D. Thermoreceptors: Thermoreceptors detect changes in temperature, such as heat or cold, and send signals to the brain to regulate body temperature. They are not sensitive to chemical molecules involved in taste or smell.

A. Compact bone: Compact bone forms the dense outer layer of bones, providing strength and support, but it does not actively participate in blood cell production.

B. Yellow bone marrow: Yellow bone marrow mainly consists of adipose tissue and functions in fat storage. It plays a minimal role in hematopoiesis under normal conditions.

C. Red bone marrow: Red bone marrow is the primary site of hematopoiesis, producing red blood cells, white blood cells, and platelets. It is located in the medullary cavities of certain bones, such as the pelvis, sternum, and vertebrae.

D. Spongy bone: Spongy bone contains red bone marrow in its cavities, supporting hematopoiesis indirectly, but the structural bone tissue itself does not produce blood cells.