Overall Flashcards
What are the main 9 traits of a mammal?
Vertebrates, Warm blooded, Hair, 4 Heart, Single jaw bone, Sweat glands, Mammary glands, Live young, Three inner ear bones
What is the acronym for skin functions?
PREPS
Characteristics of the dermis?
1/5 papillary (connective tissue, elastic) 4/5 reticular (dense connective, elastic, collagen) Attached to epidermis by basement membrane, Sensory perception
What is the hypodermis?
Layer loose connective tissue
Function of hypodermis?
Separated dermis, Permits skin movement
What is the hypodermis made out of?
Fibroblasts, adipocytes, macrophages
Skin types of reptiles, birds, mammals?
Thick, dry - Thin lipogenic - Thick, waterproof
Epidermis of reptiles, birds, mammals?
Keratinous - Thin - 5 layers
Shedding of reptiles, birds, mammals?
Ecdysis - Moult - Slough
Glands of reptiles, birds, mammals?
Few femoral - Few uropygial - Sebaceaous sudiferous
Cells of reptiles, birds, mammals?
Chromatophores, Pigments feathers, Melanophores
3 types of mammalian hair?
Guard, Wool, Tactile
What are guard hairs?
Smooth outer coat
What are wool hairs?
Fine and curly
What are tactile hairs?
Long and stiff common on face