1. The agranular endoplasmic reticulum consists of cisternae, canals, and wide sacculi.

2. Inside the chromatophore cell, pigment granules are enclosed in an elastic sac, called the cytoelastic sacculus.

3. SaCella appears to be a hybrid of sacculus with Cella, which is derived from the image of a beehive, a lasting metaphor for storing wisdom away like honey.