What belongs to gross anatomy and what is it?
Gross anatomy can be seen with the naked eye. It's the compact/cortical bone (hard outer "shell" of the bone) and trabecular bone (looks a bit like a sponge, blood cells are made there).
| Term | Definition |
|---|---|
What belongs to gross anatomy and what is it? | Gross anatomy can be seen with the naked eye. It's the compact/cortical bone (hard outer "shell" of the bone) and trabecular bone (looks a bit like a sponge, blood cells are made there). |
What is the molecular structure of the bone? | Collagen (30%) -> gives the bone flexibility, organic component.
Hydroxyapatite (70%) -> gives the bone strength, inorganic component.
Both collagen and hydroxyapatite creates optimal combination of hardness and elasticity. |
How does the bone remodel? | 3 bone cells. Osteocytes: living bone cell (communication).
Osteoblast: bone-forming cells (creates new bone).
Osteoclast: bone resorption (eats away the old bone).
10% of the skeleton each year.
Bone is a living tissue. |
How does the bone grow? | 1. Intramembranous ossification: Bone develops directly from soft connective tissue, mainly happens in the skull.
2. Endochondral ossification: Bone develops by replacing cartilage with bone. The cartilage at the ends of growing bones allows the bone to increase in length. |
How many bones are there in the adult skeleton? | 206 bones. 28 in the skull and 178 bones in post-cranial skeleton (skeleton beneath the skull). |
How many adult teeth? And what is the formula? | 32 teeth, 8 incisors, 4 canines, 8 premolars, 12 molars.
Adult human dental formula: 2.1.2.3. |
How many decidious (milk) teeth? And the formula? | 20 teeth, 8 incisors, 4 canines, 8 molars.
Decidious dental formula: 2.1.2 |