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BIOL212

Majors animal: Anatomy of the tunicate (matching)

AnatomyPhysiology
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
Created by: scandalouscanine