Answer:
In Branchiostoma, it is used mainly for feeding. The pharynx consists of numerous pharyngeal bars, with pharyngeal slits between them. The animal sucks in water through its mouth and forces it out through the pharyngeal slits, capturing small food particles from the water
5. Mitosis - cell division that produces two daughter cells that are identical to the original parent cell
2. Growth - the increase in size of cell or number of cells in an organism
6. Reproduction- the process by which cells produce new cells like themselves, or by which an organism produces an offspring
4. Metabolism all of the chemical processes in an organism that provide for the maintenance and functioning of the organism
3. Homeostasis - the maintenance of a relatively constant state in the internal environment of an organism
1. Adaptability - the change by a living organism in response to a change in the environment
Answer:
Three major hormones (PTH, vitamin D, and calcitonin) interact to maintain a constant concentration of calcium, despite variations in intake and excretion.
Explanation:
The second major hormone involved in the regulation of calcium metabolism and skeletal remodeling is vitamin D, which includes cholecalciferol (vitamin D3) of animal origin, as well as ergocalciferol (vitamin D2) of plant origin.
