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CVA Lab Terms #2
Lamprey
| Question | Answer |
|---|---|
| Lamprey Phylum | Chordata |
| Lamprey Subphylum | Vertebrata |
| Lamprey Infraphylum | Agnatha |
| Lamprey Order | Cyclostomata |
| Oral Hood - Larvae | covering of lamprey mouth |
| Oral Tentacles - larvae | small sensory organs found in mouth |
| velum - larvae | diverts food into esophagus |
| spinal cord - larvae | above notochord, stained darker |
| notochord - larvae/adult | elastic rod-like structure that allows the organism structure and flexibility |
| myomeres - larvae | blocks of skeletal muscle found at the top of the organism |
| brain - larvae | darker stained area by eye, comes off of spinal cord |
| anus - larvae | where waste is disposed of, found at the base of the tail |
| caudal fin - larvae | very last fin on the tail portion of the organism |
| eye spot - larvae | darker stained spot near brain region, primitive eye/sensory organ |
| heart - larvae | circulates blood. appears to be an empty looking area behind gill slits |
| intestine - larvae | dark stained tube on the ventral side of the animal. absorbs and disposes of nutrients |
| esophagus - larvae/adult | takes in food, found directly on top of or near liver. |
| endostyle (subpharyngeal gland) - larvae | functions as primitive thyroid, found in dark stained area below gill slits |
| nostril (f) - adult | takes in olfactory input. lampreys only have one located on the dorsal side of the animal |
| pineal cornea (f) - adult | provides stimulus to the pineal gland, which helps regulate the circadian rhythm. white/clearish area located behind the nostril/nares. |
| eye - adult | takes in visual stimulation |
| buccal funnel - adult | refers to entire mouth area which is lined with keratinized "teeth" |
| teeth - adult | projections located in the buccal cavity. not true teeth as they do not have an enamel. made of keratin. |
| tongue - adult | raspy with teeth like projections, located in the middle of the mouth |
| external gill slits - adult | dots/holes located on the outside of the organism |
| anterior dorsal fin - adult | dorsal fin located closest to the front of the organism |
| posterior dorsal fin - adult | dorsal fin located closer to the back of the organism |
| caudal fin - adult | furthest fin on the organism |
| lateral line system (f) - adult | small light dots near the face. assists in sensing movement, vibration, and pressure within the water. |
| cloaca - adult | used in reproduction, located on the ventral side of the organism near the base of the tail |
| urogenital papillae - adult | projection located near the cloaca |
| internal gill slits - adult | slits within the gill organ located within the respiratory tube |
| brain - adult | gap located behind the nostril on the dorsal side of the animal, interprets sensory input |
| olfactory sac - adult | receives sensory input from nares/nostril, located when you probe inside the nostril |
| pineal gland (f) - adult | helps regulate circadian rhythm, located beneath pineal cornea in the white or light portion behind nostril |
| buccal papillae - adult | small projections on the edge of the buccal funnel |
| velum (f) - adult | diverts food into esophagus, found by probing respiratory tube |
| respiratory tube - adult | helps organism respirate, velum is located here, determine by looking for circles that lead to the external gill slits |
| heart - adult | circulates blood throughout the organism. located in a "gap" just behind the internal gills |
| liver - adult | filters waste from the organism's bloodstream, located behind the heart |
| gonad - adult | intertwined with intestine in organism, holds reproductive system, females have small dots while males look flappy |
| intestine - adult | found on top of gonads, small strip, transports food waste to anus |
| dorsal hollow nerve cord - adult | dorsal to notochord, smaller and more clear strip on top of the notochord - becomes the central nervous system |
| myomere - adult | solid blocks of muscles located on the dorsal side of the organism |
| myosepta - adult | the dividing pieces that divide the myomeres on the dorsal side of the organism |
| branchial pouch - adult | respiratory cavity |
| gill lamellae - adult | filaments on the gills |
| epidermis | outermost layer of skin, provides barrier to infection and against the outside world |
| dermis | second layer of skin, contains blood vessels, hair follicles, nerves and fat cells |
| hypodermis/subcutaneous layer | third layer of skin, helps insulate and protect the body as well as store fat |
| dermal papillae | projections of epidermal cells that increase the strength of the connection between the epidermis and dermis. They are found in the superficial portion of the dermis, near the stratum basale of the epidermis |
| basement membrane | a thin, pliable sheet-like type of extracellular matrix that provides cell and tissue support and acts as a platform for complex signalling. The basement membrane sits between epithelial tissues including mesothelium and endothelium |
| placoid scale - shark | tiny, tough scales that cover the skin of elasmobranches, or cartilaginous fish, such as sharks, rays, and skates. They are like teeth covered with hard enamel and have a v-shaped structure that reduces drag and increases turbulence |
| spine - shark | outer covering of the placoid scale |
| basal plate - shark | end part of the placoid scale |
| pulp cavity - shark | inner part of the placoid scale |
| dermal scale - bony fish | bony plates that fit closely together or overlap and form the dermal skeleton |
| mucous gland - bony fish | provide the skin/scales with a mucousy covering |
Created by:
emma.boc
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