Musculoskeletal System Flashcards
How many bones in Skeletal System
206 Bones
Bones comes together
Joints
Fibrous connective tissue that link bones
Cartilage
Muscular System Main function?
- Contractility
- Movement
Age related changes in Skeletal muscle
- Reduction in muscle mass
- Reduction in muscle fiber number
- Changes in muscle fiber size
- Chnges in motor unit and size
- Altered motor unit remodelling
Factors Contributing to bones loss
- Decreased calcium diet
- Hormonal changes
- Lack of exercise
- Gender
- Caffeine
- Genetics
- Alcohol
- Ciggarettes
Where do you found 99% of calcium in the body?
Teeth and bones
What does bones composed of?
Calcium salts
Aging causes bones to?
- Brittle, weak and easily ruptured
Why women lose more calcium?
Due to menopause
What food rich in calcium?
- Dairy products
- Fish
- Leafy veggies
- Tofu
Bone loss and lack of estrogen is due to?
Menopause
Rapid bone loss cause by acceleration in _ resulting to _ and bone formation
- Bone turnover
- Bone resorption
Estrogen helps bone?
Bone resorption
Vital for bone and mascular health
Testosterone
“Rejuvinating effect”
Exercise
Grow muscles and bones stronger
Exercise
Differences of bones in men and women
Women
- Prone to osteoporosis
- Thinner bones
- Smaller denser bones
Men
- Larger denser bones
This interfere with calcium absorption, promoting resorption, altering hormone levels and disrupting nutrient absorption
Caffeine
Variations in genes related to bone metabolism is due to?
Genetics
Bone remodelling genes
- RANK
- RANKL
- OP6
- COL1A1
what does affect collagen composition?
Genetic variations
cells that breaksdown bone
Osteoclast
Cells that produce new bone
Osteoblast
