Anatomy Unit 15 Respiratory System

Respiratory System

Responsible for adding oxygen to your body and exchanging carbon dioxide

Respiration

Breathing

Nasal Cavity

Space in the nose

Nasal septum

Wall of bone and cartilage that separates the nasal cavity into two parts

Paranasal sinuses

Air-filled cavity in a cranial or facial bone lined with mucous membrane an connected to the nasal cavity

larynx

Structure superior to the trachea that houses the vocal chords

glottis

Slit-like opening between the vocal chords and the true vocal chords

epiglottis

Flap-like, cartilaginous structure at the back of the tongue near the entrance to the trachea

Trachea

Tubular organ that leads from the larynx to the trachea

Bronchioles

Small branches of bronchi in the lungs

Alveoli

Air-sac of a lung: a saclike structure where gases are exchanged between systems.

Lungs

Soft, spongy, cone shaped organs in the thoracic cavity

Viceral Pleura

Membrane that covers the surface of the lungs

Parietal Pleura

Membrane that forms the outer wall of the thoracic cavity

Pleural cavity

Potential space between pleural membranes

inspiration

Breathing in- Inhalation

Expiration

Breathing out - Exhalation

Diaphragm

A sheet like structure largely composed of skeletal muscle and connective tissue that separates the thoracic cavity and abdominal cavities.