Pre-test: Chapter 3 - Cell Diversity

Fibroblast

A nurse is reviewing a patient's lab report showing impaired tissue repair following a surgical incision. Which cell type, primarily responsible for secreting collagen and extracellular matrix components during wound healing, is likely compromised?

Anucleated, biconcave disc shape

Which structural adaptation allows human erythrocytes (red blood cells) to maximize their hemoglobin capacity and efficiently diffuse gases across their membranes?

Goblet cells

A patient presenting with severe asthma exhibits hypersecretion of mucus lining the respiratory tract. Which specialized epithelial cells are primarily responsible for synthesizing and secreting this mucus?

Skeletal muscle cell

A histological sample shows long, cylindrical, striated cells with multiple nuclei located at the periphery of each cell. Which type of muscle cell does this describe?

Macrophages

During an inflammatory response, which specialized phagocytic cells extend pseudopods to engulf bacterial pathogens and cellular debris, digesting them using abundant lysosomes?

Capability to generate and propagate action potentials via voltage-gated ion channels

Which functional feature uniquely distinguishes neurons from other somatic cells in the human body?

Energy storage, thermal insulation, and endocrine secretion

A microscopic study reveals cells containing a massive central lipid droplet that displaces the nucleus and cytoplasm to the outer rim of the cell. What primary function do these cells serve?

Spermatozoa

Which human cell type is unique in possessing a flagellum, providing the propulsion necessary for motility through fluid environments?

Minimal distance allowing rapid, passive gas and nutrient diffusion

Alveoli in the lungs and capillaries throughout the systemic circulation are lined by simple squamous epithelium. What is the primary functional advantage of this specific cell morphology?

Osteocytes

Mature bone cells that reside in small spaces called lacunae, interconnected by microscopic canals (canaliculi) to monitor mechanical strain and maintain the mineral matrix, are known as: