the heart contains the septum
A septum is a wall between two chambers of an organ. There's a septum in your nose dividing the two nostrils, and a septum in your heard dividing the left and right sides of the heart.
an organism because an organism can contain multiple organ systems
the nose belongs to the respiratory system.
An organ system
Liver
Circulatory System.
The circulatory system
Two or more organs are in an organ system. In addition to organs, an organ system can contain other structures that serve the organ(s) and organ system.
Sensory organ system
Because an organism is a being which contains organs and an organ system is a system of organs.
The nervous system.
ciculaoty system
The Digestive System and also the Respiratory System.
Nervous System
The skeletal system.
the bronchioles