1 Aim to settle the baby for daytime naps and night-time sleep in a predictable way (eg, quiet play, move to the bedroom, wrap the baby, give the baby a brief cuddle, then settle in the cot while still awake). 2  Avoid excessive stimulation-noise, light, handling. 3  Excessive quiet should also be avoided.
The skeleton of the sponge is composed of tiny needle-like splinters called spicules, a mesh of protein called spongin, or a combination of both. Many sponges can only be identified by microscopic examination of the skeleton, which makes certain identification from photographs difficult.he collar cells have a sticky, funnel shaped collar and a hairlike whip, called a flagellum. The collar cells serve two purposes. First, they beat their flagella back and forth to force water through the sponge. The water brings in nutrients and oxygen, while it carries out waste and carbon dioxide.
Why, you ask? Well, the term Porifera is actually the scientific name given to the group of organisms known commonly as sponges. But, unlike SpongeBob, living sponges are neither square in shape nor in interest-they are actually a really important and diverse phylum within the animal kingdom.owever, here we will focus on the key features of Porifera: choanocytes and spicules (formed by sclerocyte cells). Choanocytes, also known as collar cells, derive their name from the collar-like base where the flagellum (or tail) protrudes.