Human Body: Orientation Part 2 Flashcards
axial part of the body
head, neck, and trunk - basically the ‘main’ part of the body
appendicular part
consists of appendages/limbs attached to body’s axis
saggital plane
vertical plane that divides body into right and left
median/midsagittal plan is centered
parasagittal plane is offset from center
creates midsagittal/parasagittal cuts
transverse plane
horizontal plane dividing body into superior and inferior parts.
also called cross section
creates transverse section
frontal/coronal plane
vertical plane that divides body into posterior and anterior parts
creates frontal/coronal section
superior / cranal
a direction - toward the head end/upper end of body/above
inferior (caudal)
direction - away from head end/toward lower part of body/below
anterior/ventral
direction
toward/at front of body/in front of
posterior/dorsal
direction
toward the back of the body/behind
medial
direction
toward the midline of body / on inner side of
lateral
direction
away from midline/on outer side of
intermediate
direction
between a more medial and more lateral structure
proximal
direction
closer to the origin of the body part/point of attachment of limb to trunk
distal
direction
farther from the origin of body (trunk)
superficial
direction
external. toward or at body surface
deep
direction
internal. away from body surface, more internal
dorsal body cavity
includes cranial (brain) and vertebral cavity (spinal cord)
ventral body cavity
includes thoracic cavity and abdominopelvic cavity
all organs in this cavity are known as viscera/visceral organs
thoracic cavity
divided into:
pleural cavity - lateral cavities each envelope a lung
mediastinum, the mediastinum contains the pericardial cavity, which encloses the heart and surround remaining thoracic organs
abdominopelvic cavity
made of :
abdominal cavity, that contains stomach, intestines, spleen, liver, and others.
pelvic cavity, that contains urinary bladder, some reproductive organs, and rectum
diaphragm
dome-shaped muscle important in breathing and separates thoracic and abdominopelvic cavities
serosa/serous membrane
thin, double-layered membrane that cover the walls of the ventral body cavity (this part is called parietal serosa) and outer surfaces of the organs (called the visceral serosa) within the cavity and in contact with organs.
serous fluid
thin layer of lubricating fluid that is in between the layers of the serous membrane. Allow organs to move (reducing friction)
Abdominopelvic Quadrants
when a transverse and median plane cross through umbilicus at right angles you get a RUQ, LUQ, RLQ, and LLQ
(9) Abdominopelvic Regions
formed from 2 transverse and 2 parasigittal planes.
at the center is the umbilical region, above that is the epigastric region. Below umbilical is hypogastric region. Lateral to hypogastric is right and left iliac/inguinal regions. Laterial to umbilical is right and life lumbar regions. Lateral to epigastric is right and left hypochondriac regions
parietal serosa
the part of the serosa membrane that lines the walls of ventral body cavity
visceral serosa
part of the serosa membrane that covers the internal organs of the ventral body cavity
parietal and visceral pericardium
parietal pericardium - lines the pericardial cavity
visceral pericardium - covers the heart within pericardial cavity
visceral and parietal pleura
parietal pleura - covers inside of thoracic cavity
visceral pleura - covers the lungs
parietal and visceral peritoneum
parietal peritoneum - lines the walls of the abdominopelvic cavity
visceral peritoneum - covers most of the organs of the abdominopelvic cavity
The smaller cavities of the body
- oral & digestive
- nasal
- orbital (in the skull house the eyes)
- middle ear cavities (in skull, medial to ear drums)
- synovial cavities (joint cavities)
^all of these minus synovial are exposed to outside environment
supine position
The body lying horizontally flat on the back, with the face and torso facing up (gazing at the ceiling).
prone position
The body lying flat on the stomach with face facing down (looking at the floor).
contralateral
(directional term): opposite side
ipsilateral
directional term; same side
Cephalic Region
- pertaining to the head
- subdivided into cranial and facial
cervical region
-pertaining to the neck
torso (trunk) region
-subdivided into containing thoracic (chest), abdominal, pelvic, anterior (front) & posterior (back)
upper limb region
-subdivided into the shoulder, brachial (arm), and manus (hand)
Lower limb region
subdivided into:
- femoral - thigh
- crural - leg
- tarsal - ankle
- pedal - foot
- coxal - hip
- patellar (knee)
- popliteal - behind the knee
- sural - calf
- fibular/peroneal - outside of lower leg
pleurisy
inflammation of the pleurae serosa