Keyword: "respiratory system"

"The Lungs. 1, Summit of lungs. 2, Base of lungs. 3, Trachea. 4, Right bronchus. 5, Left bronchus. 6,…

The lungs in position.

Plate-like covering of white grubs.

Shows how air enters the spiracles into the respiratory system of an insect.

A toothed slit of a spiracle of the respiratory system of an insect.

A spiracle of the respiratory system of an insect.

Conical spiracle set in a pit, protected by crossed hairs.

Crossed hair section of a spiracle in the respiratory system of an insect.

A lip-like spiracle of the respiratory system of an insect.

An unprotected round spiracle of an insect's respiratory system.

An unprotected slit-like spiracle of an insect's respiratory system.

The Tracheal tube of an insect, showing the structure and methods of branching.

Clipart tagged: ‘respiratory system’