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Frog Dissection
| Term | Definition |
|---|---|
| Chromatophores | pigment cells found in the dermis layer of the skin |
| Poison glands | located in the dermis layer of the skin |
| Nicitating Membranes | a third eyelid that may be drawn up over the eyeball as a shade permitting the frog to see while protecting the cornea |
| Tympanum | eardrum; round membrane covered by skin |
| External Nares | nostrils; opened and closed by nasal flaps |
| Sternum | Breastbone |
| Maxillary Teeth | row of teeth used to hold onto food |
| Vomerine teeth | prevent the escape of prey |
| Glottis | opening to the larynx and lungs |
| Eustachian Tubes | openings that lead to the tympanum |
| Cutaneous Respiration | occurs through the skin |
| Bucopharyngeal Respiration | occurs through thin membranes lining the mouth and pharynx |
| Pulmonary Respiration | occurs through the lungs |
| Visceral Peritoneum | thin membrane that covers the internal organs |
| Parietal Peritoneum | thin membrane that lines the inside of the body cavity |
| Mesentary | double membranous structure that suspends the internal organs |
| Rugae | folds on the internal wall of the stomach that aid in digestion |
| Pyloric Sphincter Valve | regulates the exit of partially digested food from the stomach to the intestines |
| Duodenum | first portion of the small intestine |
| Cloaca | the common receptacle for wastes of the rectum, the urinary wastes, and the sperm and eggs |
| Incomplete Double Circulation | oxygenated and deoxygenated blood gets mixed in the heart |
| Pericardium | thin membranous sac enclosing the heart |
| Ventricle | thick, muscular pumping structure of the heart |
| Truncus Arteriosis | large vessel that exits the anterior portion of the ventricle and carries blood to all parts of the body |
| Sinus Venosus | triangular sac that lies on the dorsal surface of the heart |
| Retroperitoneally | behind the transparent peritoneum |
| Mesorchium | membranous fold of peritoneum that attaches the testes to the dorsal body wall |
| vas efferentia | fine tubules embedded in the mesorchium that transport sperm from the testes to the kidneys |
| mesovarium | double layer of the peritoneum that suspends the ovaries from the dorsal wall |
| Central Nervous System | brain and spinal cord |
| Peripheral Nervous System | sense organs, cranial and spinal nerves, and their branches |
| Neurons | receive stimuli, interpret sensations, and transmit messages to and from the CNS |
| Olfactory Lobes | most anterior portions of the brain; receive impulses of smell from the nostrils |
| Cerebrum | directly posterior to the olfactory lobes; in charge of voluntary muscle control |
| Optic Lobes | posterior to the cerebrum; receive impulses from the eyes |
| Cerebellum | narrow band of tissue below the optic lobes; controls balance |
| Medulla Oblongata | enlarged, triangular-shaped tissue that forms the posterior portion of the brain; controls internal organs and involuntary muscle control |
Created by:
katherinekel2013
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