CT: Connective Tissue Proper: Adipose & Reticular Flashcards
Predominant type of adipose in adults
White adipose
White adipose function
- Provides energy storage
- Insulation
- Cushioning
White adipose deposition
- Visceral
- Lower part of the body
Special form of CT with fat storing cells
Adipocytes
Adipocyte composition
- Single droplet of fat
- Nucleus (pushed against plasma membrane)
Adipose tissue characteristics
- Vascular
- Supplied with nerve fibers
What is fat mobilization and storage influenced by?
Neural and hormonal mechanisms
What do adipose cells produce and secrete?
A group of hormones and inflammatory chemicals
A hormone produce by adipose cells that signal the brain to reduce food intake
Leptin
In obese people, the brain becomes less responsive to this hormone
Leptin
Inflammatory chemicals
- Interleukin 6
- TNF-alpha
What do inflammatory chemicals contribute to?
- Inflammation (no shit)
- Heart disease
- Type 2 diabetes
Contributes to insulin resistance
Resistin
Anti-inflammatory hormone, ratio of resistin to adiponecin, changes in obese people
Adiponectin
What does angiotensinogen convert into?
Angiotensinogen 2 (electric boogaloo)
Results of converting angiotensinogen to angiotensinogen 2
- ⬆️ thirst
- ⬆️ vasoconstriction
- Release of aldosterone & ADH
- ⬆️ BP
Where is 80% of angiotensinogen produced?
Liver
White adipose converts tissue hormone from an inactive form of the same hormone
Cortisol
Brown fat composition
Many fat droplets in cytoplasm
Brown fat vascularity
Well supplied
Where is brown fat found in large quantities?
- Hibernating animals
- Newborns
Brown fat purpose
Heat liberation
Where are reticular fibers found?
Small vascular channels/sinusoids/liver
Background networking the lymphatic organs such as spleen and lymph nodes
Stroma
