Overview of the skeleton & Anatomical terminology Flashcards
Osteo=
bone
ology=
scientific study
Osteology
discipline dedicated to studying skeletons (bones and teeth)
Central skill in human osteology is what?
Identification
Components of identification
- which element of the skeleton
- which side of the body
How many bones in adult human skeleton?
206
How many bones in the skull?
28
How many bones in the vertebrae?
24
How many bones in the sacrum and coccyx?
2
How many bones in the ribs?
24
How many bones in the sternum and hyoid?
2
How many bones in the upper limbs?
10
How many bones in the hands?
54
How many bones in the lower limbs?
10
How many bones in the feet?
52
When siding
- left
- right
(if paired bones) - midline
How many teeth?
32
Examples of accessory bones
- fabella
- os ulnostyloideum
- supernumerary rib on lumbar vertebra (L1)
- “cervical rib”
Cranial
referring to skull (cranium + mandible)
Post cranial
referring to everything that is not the skull
Axial skeleton
central “axis”
Appendicular skeleton
“appendage”
- limbs, hands, feet, and girdles
Long bone example
humerus
Irregular bone example
vertebra
Flat bone example
sternum
Short bone example
talus
Describe anatomical position and why it is important
A standardized body posture in which:
- standing upright
- facing forward
- feet together with toes pointing forward
- arms along the sides
- palms forward and thumbs out
Planes of reference
1.) Coronal (frontal)
2.) Sagittal
3.) Transverse
Coronal (frontal) plane
- separates front and back
Sagittal plane
- separates one side from the other
Midsagittal plane
- goes down the midline and separates right and left halves
Transverse plane
- separates top from bottom
All the planes are______ to the others
orthogonal
Primary body axes in humans and other orthograde animals
- anterior
- posterior
- superior
- inferior
Orthograde
Trunk is oriented upright
Anterior
toward the front/in front