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level: Introduction of Mammals

Questions and Answers List

Orders and terms

level questions: Introduction of Mammals

QuestionAnswer
Called?Withers
What are the 5 distinguishing characteristics of mammals?Pelage of hair/fur, Diaphragm, 3 inner ear bones, 7 cervical vertebrae, Mammary glands
What two terms describe mammal's body temperature?Endotherms, Homeotherms
What does Endotherm and Homeotherm mean?Endotherm: generate own body heat, Homeotherm: Can cool/heat body. Can maintain a steady body temp.
What temperature are mammals usually?100 degrees F
What does Estrus mean?to be in heat
What does Heterodont and Homodont mean? (teeth)Heterodont: Incisors, Canines, Molars, Premolars Homodont: all the same
What is a diastema?A space lacking canines
What are 5 functions of hair?Coloration, Physical Protection, Communication, Sensory, Insulation
What are the 4 types of hair?Guard hairs, Vibrissae, Awn hair, Down hair
What is Guard hair?The outermost hair
What is down hair?Inner hair for insulation
What is awn hair?In between guard and down
What is vibrissae hair?whiskers. attached to nerve endings
What animals are included in the order Monotremata?Platypus
What makes Monotremata mammals different from other mammals?Have: Cloaca, Locomotion, Lays eggs, Venom Not have: Teats, Vibrissae Sweat milk!
Where are Marsupials found?America and Austrailia
What makes Marsupials different from other mammals?Short gestation, Develop in marsupium.
What animals are Marsupials?Kangaroo, Possum
What animals are Soricomorpha?Moles, Shrews
How do Soricomorpha walk?plantigrade
What make Soricomorpha mammals unique?Fossorial (most live life underground. Powerful front limbs, Placental mammals. (completes embryo development inside mom)
What is this?Antlers
What is this?Baculum (penis bone)
What is the chest region of this animal called?Brisket
What is this?Dewclaw
What is the hanging loose skin called on the cow's chest?Dewlap
What is the "knuckle" called?Fetlock
What is this called?Flank (soft part between hips and ribs)
What is this called?Metatarsal gland
Line of teats called?Milk Line
What called?Muzzle
What is this called?Pinna (ear flaps)
What is this called?Rhinarium (squishy pad nose)
What is this called?Rump
Called?Withers