Body positions, anatomical planes and sections, directional terms Flashcards
Describe the anatomical position; define the anatomical planes, anatomical sections and directional terms used to describe the body
Describe the anatomical position
Subject standing up facing the observer
Head level and eyes facing forwards
Lower limbs parallel
Feet flat on the floor and directed forward
Upper limbs at the sides with palms turned forwards
What is the word for a body lying face down?
Prone
What is the word for a body lying face up?
Supine
When referring to the right or left side of the body, is this from the subject’s or observer’s point of view?
The subject’s
How are directional terms used in anatomy?
To describe the location of one structure/body part relative to another structure
Name the thirteen directional terms used to describe the human body
(6 pairs with opposite meanings, 1 stand-alone)
- Superior and inferior
- Anterior and posterior
- Medial and lateral
- Intermediate
- Ipsilateral and contralateral
- Proximal and distal
- Superficial and deep
Define superior
Toward the head or upper part of a structure
Define inferior
Away from the head or toward the lower part of a structure
Define anterior
Nearer to or at the front of the body
Define posterior
Nearer to or at the back of the body
Define medial
Nearer to the midline
Define lateral
Farther from the midline
Define intermediate
Between two structures
Define ipsilateral
On the same side of the body as another structure
Define contralateral
On the opposite side of the body from another structure
Define proximal
Nearer to the attachment of a limb to the trunk
Define distal
Farther from the attachment of a limb to the trunk
Define superficial
Toward or on the surface of the body
Define deep
Away from the surface of the body
What is the midline?
An imaginary longitudinal line that divides the body into equal left and right sides
What is a plane in anatomy?
An imaginary flat surface that divides the body to visualise interior structures
Name the five planes through the human body
- Median (midsaggital)
- Paramedian (parasaggital)
- Coronal (frontal)
- Transverse (cross-sectional/horizontal)
- Oblique
Describe the median plane
An imaginary longitudinal line that divides the body or an organ into equal left and right sides (through the midline)
Describe the paramedian plane
An imaginary longitudinal line that divides the body or an organ into unequal left and right sides
Describe the coronal plane
An imaginary longitudinal line that divides the body or an organ into anterior and posterior portions
Describe the transverse plane
An imaginary horizontal line that divides the body or an organ into superior and inferior portions
Describe the oblique plane
An imaginary line through the body or an organ which is at an oblique angle i.e. not at 90 degrees
What is a section in the study of a body region?
A cut of the body or an organ made along one of the directional planes