Skin Part 3- 3 Flashcards
What type of secretion method is used by uropygial gland in birds?
Holocrine
What type of secretion does uropygial gland have in birds?
Oily- sebum for “preening”
What type of bird gland opens to primary duct through papilla, onto epidermal surface?
Uropygial gland
What muscle has the origin of superficial dermis?
Arrector pili muscle
Which muscle of dermis has the insertion of connective tissue sheath of hair follicle?
Arrector pili muscle
What type of muscle tissue is arrector pili muscle?
Smooth muscle
What are modified epithelial cells?
Merkel cells
Where can merkel cells be found in chicken and in mice?
Combs
Tactile hair
What type of stimuli do merkel cells play a role in?
Tactile
What do merkel cells do?
Secrete messengers because in synaptic terminal ends of neurons
Where are pacinian corpuscles found?
Dermis
Visceral organs- BLADDER
What do pacinian corpuscles detect?
Pressure
Where are Herbst’s muscle mainly found?
Dermis of beaks and LOWER LEGS
What detects pressure in birds?
Herbst’s
What type of tissue is subcutis?
Adipose
