Muscles of the Respiratory and Abdominal Regions

Diaphragm

Primary muscle for respiration, separates thorax and abdomen.

External intercostals

Muscles between ribs, aid in inhalation.

External oblique

Superficial abdominal muscle, rotates trunk.

Internal intercostals

Muscles between ribs, assist in exhalation.

Internal obliques

Abdominal muscles, support trunk rotation and flexion.

Rectus abdominis

Vertical abdominal muscle, flexes spine.

Transversus abdominis

Deepest abdominal muscle, stabilizes core.

Pharyngeal tonsils

Pharynx

Laryngopharynx

Nasopharynx

Oropharynx

Soft palate

Superior nasal concha

Uvula

External nares / nostrils

Hard palate

Hyoid bone

Inferior nasal concha

Internal nares

Larynx

Cricoid cartilage

Epiglottis

Glottis

Thyroid cartilage

Vocal folds / Vocal cords

Lingual tonsils

Middle nasal concha

Nasal cavity

Nasal septum

Nose

Palatine tonsils

Alveolus (pl. alveoli)

Left lung

Inferior lobe

Superior lobe

Left primary bronchus

Left secondary bronchus (pl. bronchi)

Left tertiary bronchus (pl. bronchi)

Parietal pleura

Right lung

Inferior lobe

Middle lobe

Superior lobe

Right primary bronchus

Right secondary bronchus (pl. bronchi)

Right tertiary bronchus (pl. bronchi)

Trachea

Visceral pleura

Simple squamous epithelium

Alveolar duct

Alveolar sac

Bronchiole

Ciliated simple columnar epithelium

Ciliated simple cuboidal epithelium

Smooth muscle

Bronchus (pl. bronchi)

Ciliated pseudostratified columnar epithelium

Ciliated simple columnar epithelium

Hyaline cartilage

Pulmonary blood vessel

Anatomical dead space

Conducting zone

Mucous

Respiratory zone

Goblet / mucous cells

Lumen

Pseudostratified columnar epithelium (ciliated)

Seromucous glands

Trachealis muscle