33 terms
Zoology - Unit 6
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Wishbone
Fused clavicles of birds
Placental
Offspring that can walk, run, swim, and feed themselves at hatching
Glottis
Respiratory opening, allows snake to breathe while swallowing
Down
Feathers located under the other feathers and are used for insulation
Median eye
Used in reptiles to differentiate light and dark periods
Gila
U.S. Poisonous lizard
Allantois
Membrane that stores embryonic waste
Estrus
Time periods when females are receptive to mating
Endothermic
Organisms that produce their own body heat
Chorion
Membrane that aids in gas exchange
Migration
Periodic round trips to and from breeding areas
Autonomy
Tail loss
Hibernation
Period of time when an individual has reduced metabolic activity
Yolk sac
Membrane that encloses the nutrients for the growing embryo
Keratin
Very common protein found in scales, hair, and feathers
Placenta
Mammal organ that allows for the exchange of nutrients between mother and fetus
Contour
Feathers that cover most of the surface of birds
Molting
Periodic replacement of flight feathers
Chimpanzee
Your clostest living relative
Jacobsons organs
Olfactory receptors at the end of the tongue
Amnion
Fluid filled membrane that protects the embryo from shock and desiccation
Heterodont
Organisms with specialized teeth; mammals
Diaphragm
Muscular organ mammals use for respiration
Ectothermic
Rely on the environment for body heat
Gestation
Period of time which fetal development takes place
Pit organ
Heat sensitive structures used to identify prey
Altricial
Offspring completely dependent of parent
Amniotic
Egg with extra embryonic membranes that protect the embryo
Mammary
Glands that produce milk
Plastron
Ventral portion of shell
Gizzard
Gringing organ of digestion
Carapace
Dorsal portion of shell
Flight
Feathers on wing and tail