Primary subjects

Secondary subjects

Projected features in verbal metaphors

Projected features in pictorial metaphors

Oesophagus

Tunnel

Tube that connects, a passageway through

The bus drives out of a dark tunnel

Food through oesophagus to stomach

Toothpaste in a tube

Squeeze, push

The section of a tube with a black spot at the lower end moving upward.

Intestine

Tube

Coiled up, hollow, long

Coiled-up, long

Villi

Fingers

Physical similarity; Tiny Finger-like structures

Layers of finger-like structures laying together

Heart

House

Multiple chambers inside

4 chambers

Chambers

Pump

Hollow; to move fluid or gas by pressure or suction

Chambers with arrows indicating the moving direction

Body

Cycle

Blood circulates inside the body

Blood vessels moving all through the body