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Organization of Human Body Wendy Alcantar Period.1 (Levels Of Organization…
Organization of Human Body Wendy Alcantar Period.1
Planes and Sections of The Body
Frontal plane
Sagittal Plane
Transverse Plane
Divides the body into inferior and superior portions
Dives the body into right and left portions
Divides the body into anterior and posterior portions
These planes are perpendicular to sagittal planes.
Directional Terms
Superior
Inferior
Anterior
Posterior
Medial
Lateral
Proximal
Distal
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Toward or nearest the trunk of the body
Away from the midline of the body
Towards the middle of the body
"Back" or "in back of"
Anterior means "front"
"forward the head"
Body Systems
Anatomy
Physiology
Anatomical Position
Cranial Cavity
Spinal Cavity
Thoracic Cavity(2 major sections)
Abdominal Cavity
contains stomach, intestines, liver, gallbladder, pancreas, and spleen
Mediastinum
heart and trachea are located in the Mediastimum
Pleural cavities
left lung, is in left pleural cavity
right lung located in right pleural cavity
Contains spinal cord
Contains brain
Standing erect with the arms, head and feet pointed forward
The study of how the body and its parts work or function
The study of structure and shape of the body
Pelvic Cavity
contains reproductive organs, urinary bladder, and lowest parts of intestine
Levels Of Organization
Atoms
The simplest level
Molecules
Two or more atoms comprise a molecule
Macromolecule
Important molecules inside cells
Organelles
Aggregates of macromolecules used to carry out a specific function in the cell.
Cells
The basic units of structure and function for living things.
Tissues
Groups of cells functioning together
Organs
Groups of tissues that have specialized functions
Organ System
Groups or organs function together
Organism
Organ system functioning together
Feedback Loop
Positive Feedback Loop
Amplify the change that is occurring until something stops it
Negative Feedback Loop
Reverses the change