Flashcard: Introduction to the Respiratory System — 10 carte

Ventilation — definition?

Movement of air into and out of lungs.

Respiratory system functions?

Ventilation, gas exchange, protection, olfaction.

Upper respiratory structures — role?

Condition, filter, and conduct air to lower respiratory tract.

Alveoli — role?

Gas exchange surface in lungs.

Gas exchange in alveoli — process?

Diffusion of oxygen into blood and CO₂ out.

Hemoglobin — function?

Binds oxygen in blood.

Partial pressure — significance?

Determines gas diffusion direction.

Breathing regulation — control centers?

Medulla and pons in brainstem.

Upper respiratory — structures?

Nasal cavity, pharynx, larynx.

Gas exchange — location?

Across alveolar-capillary membrane.