Chapter 1- Introduction Flashcards
What is anatomy?
- the study of structure
- greek for “to cut up” or “cut open”
- physiology is the study of function
Microscopic
- a.k.a. histology
- structures too small to be seen with unaided eye
Gross
-structures that can be seen with the unaided eye
Structural organization of human body
- atoms
- molecules
- organelles
- cells
- tissues
- organs
- organ systems
- organism
Anatomical position
- standing upright
- feet parallel and on the floor
- head level and looking forward
- arms at side of body
- palms facing forward and thumbs pointing away from body
Section
- used to visualize internal and 3-D anatomy of body parts relative to each other
- an actual cut or slice through a structure
- or a piece removed by slicing through a structure
Planes
- used to visualize internal and 3-D anatomy of body pats relative to each other
- imaginary flat surfaces passing through the body or an organ
- there are 3 standard anatomical planes
Anatomical planes
Coronal (frontal)- divides the body into anterior and posterior
Transverse (horizontal)- divides into superior and inferior
Midsagittal (median)- divides into equal left and right halves. other sagittal planes divide into unequal parts.
Anatomical directions
- anterior vs posterior (ventral vs dorsal)
- superior vs inferior
- medial vs lateral
- proximal vs distal
- superficial vs deep
Axial skeleton
head, neck, trunk
Appendicular
upper and lower limbs (appendages)
including hip bones, clavicle and scapula
Cranial cavity
formed by skull bones
Vertebral cavity
formed by vertebral bones
Posterior cavities
- cranial cavity
- vertebral cavity
Ventral cavities
- thoracic cavity
- abdominopelvic cavity
- separated by diaphragm