Class Mammalia Flashcards
What is the General characters of mammalia class?
Have mammary glands.
Have mammary glands.
Four chambered hearts.
- Fertilization intemal preceded by copulation.
- Mammals are endothermic vertebrates.
Hair made of
Protein keratin
Outer cuticle made of
Scales
Leukemism ?
coat which is heavier for camouflage; condition. also includes dark eyes, dark ear tips, noses , etc
Difference between horns & antlers
Horns : Have no branches Made of hair Attached to skill Found in male and female Ex:sheep
Antlers: Have branches Made of bone Part of animal skill Found on male Ex:deer
Glands
Sweat
Scent
Sebaceous
Mannary
Types of teeth
Canines الأنياب
Premolarsبعد الضروس الامامية
Molars ضروسالخلفيه
incisors القواطع الضروس الامامية
Hetrodont
Differentation of teeth for cutting ,sezing,gnawing etc
Feeding Specializations
- Insectivores: short digestive tract (bats)
2. Herbivores:long digestive tract(horses)
Digestive system
4 chambered stomach Rumen Reticulum Omasum Abomasum
Migration and hibration
Migration:movement from on plce to another.
Hiberanation :when animals rest a sleep during winter
Echolaction
Find foood
High frequency
Reproduction in mammals
A.cycles -estrous cycle -menstrual cycle B.patterns -egg laying -pouched -placental
These lungs are controlled by a muscle called a————
diaphragmحجاب الحاجز
diaphragm.
a sheet of muscle that separates the chest cavity from the abdominal cavity
