Exercise physiology — Flashcards

Flashcard 11: labile

Answer: never enter G0; divide rapidly with short G1

Extra: bone marrow, gut epithelium, skin, hair follicles, germ cells

Flashcard 12: Define stable (quiescent) cells in the cell cycle.

Answer: Cells that enter the cell cycle (G1) from G0 only when stimulated.

Extra: Examples: Hepatocytes, lymphocytes, proximal tubule cells.

Flashcard 13: With reference to the cell cycle, what are the three cell types?

Answer: permanent, stable (quiescent), labile

Flashcard 14: What type of cytoskeletal element is most associated with cytokinesis?

Answer: microfilaments (actin and myosin)

Flashcard 15: What type of cytoskeletal element is most associated with muscle contraction?

Answer: microfilaments (actin and myosin)

Flashcard 16: Characteristics of sleep stage N1:

Answer: light sleep

Extra: Theta waves (4–7 Hz) substituted for alpha waves. Marks the transition from wakefulness to sleep.

Flashcard 17: What are the characteristic EEG findings and clinical associations (like bruxism) of NREM stage 2 (N2) sleep?

Answer: Light sleep, bruxism occurs here. Characteristic EEG: Sleep spindles and K complexes.

Extra: Bruxism (teeth grinding) most commonly occurs in N2 sleep. Sleep spindles and K complexes are the hallmark of NREM stage 2 sleep.