level: Introduction of Mammals
Questions and Answers List
Orders and terms
level questions: Introduction of Mammals
| Question | Answer |
|---|---|
| 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 |