Lab 8 – Coelom, Digestive and Respiratory Structures
We will focus on the digestive system for this lab but you should also note the respiratory
structures listed below.
Understand the following terms – know their functions!
Shark (starting on page 255 in your lab; main diagram on
page 257)
Pleuroperitoneal cavity and Body Wall:
Cut through
Skin
CT
Hypaxial musculature
Coelomic epithelium (serosa)
Mesentaries – study figure 10-1
Abdominal pores
Cloaca
Viscera:
Liver
Bile Duct
Pyloris
Pancreas
Ventral and dorsal lobes
Mesentery
Valvular Intestine
Esophagus
Gall bladder
Hepatogastric ligament
Stomach
Gastrosplenic ligament
Spleen
Digitiform gland
Teeth and primary tongue
Structure of the digestive organs (page 259)
Papillae
Rugae
Cardiac region, body, pyloric region
Pylorus
Spiral valve
Respiratory Structures
Spiracles
Gill rakers
External gill slit
Internal gill slit
Gills and lamellae
Necturus (in bucket on side counter)
Stomach
Liver
Spleen
Pylorus
Pancreas
Gall bladder
Duodenum
Small intestine
Mesentery
Pleroperitoneal cavity
Large intestine
Urinary bladder
Cloaca
Respiratory structures
External Gills
Lungs
Avian (demonstration dissection)
Crop
Gizzard
Proventriculus
Cloaca
Air Sacs (lungs)
Trachea
Mammal (cat) – Includes respiratory structures.
Salivary glands – try to find these in your
cat, but you will only be responsible for
them from a diagram (such as figure 1014)
Parotid gland
Mandibular gland
Sublingual gland
Oral Cavity. “Gain access” to the oral
cavity as described under “The Oral
Cavity” on page 274. Also, see demo on
sagittal section of cat head and neck.
Choncha
Hard and soft palates
Tongue and its papillae of tongue
Palatine rugae
Epiglottis
Esophagus
Trachea
Thoracic Contents (pg 277)
Pleural cavities
Diaphragm
Lungs
Trachea
Bronchial Tree
Heart
Liver
Gall Bladder
Pancreas
Mesentery
Small intestine
Jejunoileum
Duodenum
Colon
Greater Omentum
Thymus
Spleen
Stomach
Anus