click below
click below
Normal Size Small Size show me how
BIOL212
Majors animal: Anatomy of the tunicate (matching)
| Anatomy | Physiology |
|---|---|
| Incurrent siphon | Water enters this opening, bringing fresh oxygen and suspended food particles |
| Excurrent siphon | Water exits this opening, carrying wastes and carbon dioxide out of the animal |
| Pharynx | Receives incoming water from mouth, entraps food in a film of mucus, and is responsible for gas exchange |
| Endostyle | Secretes mucus that forms sticky coating of pharynx to trap food particles |
| Pharyngeal slits | Allow for outflow of water from pharynx into atrium |
| Atrium | Body chamber that receives water passed from pharynx through pharyngeal slits |
| Stomach | Primary digestive organ |
| Intestine | Site of nutrient absorption |
| Anus | Regulates egestion of undigested food (feces) from the body |
| Stolons | Holdfasts that allow animal to anchor itself firmly to substrate |
| Heart | Pumps blood through vessels and sinuses of open circulatory system |
| Adhesive discs | Used by larvae to attach to substrate prior to metamorphosis |
| Notochord | Provides skeletal support for anchoring of swimming muscles in the larval form |
| Dorsal nerve cord | Handles nervous coordination in the larval form |