Chapter 2 - General Anatomy and Radiographic Positioning Terminology Flashcards
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Define ANATOMY
study of the body’s structures
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Define PHYSIOLOGY
study of the function of body organs
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Define OSTEOLOGY
study of the body’s bones
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Describe the anatomic position
The body standing erect, face and eyes directed forward, arms extended by the sides with the palms of the hands facing forward, heels together, and the toes pointing anteriorly with the great toes touching
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List the 4 fundamental planes of the body
- Sagittal
- coronal
- horizontal/transverse
- oblique
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What is a sagittal plane?
a plane passing vertically from front to back, dividing the body into left and right halves
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What is a coronal plane?
a plane passing vertically through the body from side to side, dividing the body into front and back halves
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What is a midcoronal plane?
a coronal plane that divides the body into exactly equal front and back halves
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What is a midsagittal plane?
a sagittal plane that divides the body into exactly equal left and right halves
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What is a horizontal plane?
plane that travels crosswise through the body and divides it into superior and inferior segments (AKA transverse/axial)
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What are the 2 main cavities of the torso?
- thoracic
- abdominal
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In what body cavity would you find the LIVER?
ABDOMINAL
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In what body cavity would you find the LUNGS?
THORACIC
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In what body cavity would you find the HEART?
THORACIC
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In what body cavity would you find the UTERUS?
PELVIC
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In what body cavity would you find the SPLEEN?
ABDOMINAL
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In what body cavity would you find the RECTUM?
PELVIC
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In what body cavity would you find the URETERS?
ABDOMINAL
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In what body cavity would you find the TRACHEA
THORACIC
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In what body cavity would you find the OVARIES?
PELVIC
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In what body cavity would you find the ESOPHAGUS?
THORACIC
Special Planes
What plane transects the pelvis at the top of the iliac crests at the 4th lumbar spinous process?
Interiliac Plane
Special Planes
What plane is formed by the biting surfaces of the upper and lower teeth with the jaws closed?
Occlusal Plane
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What bony landmark can be used to locate C1?
MASTOID TIP
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What bony landmark can be used to locate C3/C4?
HYOID BONE
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What bony landmark can be used to locate C2/C3?
GONION (angle of mandible)
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What bony landmark can be used to locate C5?
THYROID CARTILAGE
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What bony landmark can be used to locate C7/T1?
VERTEBRA PROMINENS (large, palpable spinous process at base of neck)
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What bony landmark can be used to locate T1?
2” above JUGULAR NOTCH
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What bony landmark can be used to locate T2/T3?
JUGULAR NOTCH
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What bony landmark can be used to locate T4/T5?
STERNAL ANGLE
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What bony landmark can be used to locate T7?
INFERIOR ANGLES OF SCAPULAE
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What bony landmark can be used to locate T9/T10?
XIPHOID PROCESS
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What bony landmark can be used to locate L2/L3?
INFERIOR COSTAL MARGIN (bottom of ribcage)
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What bony landmark can be used to locate L4/L5?
MOST SUPERIOR LEVEL OF ILIAC CREST
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What bony landmark can be used to locate S1/S2?
ASIS (anterior superior iliac spine)
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What bony landmark can be used to locate COCCYX?
PUBIC SYMPHYSIS & GREATER TROCHANTERS
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How many bones comprise the typical adult skeleton?
206
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What are the 2 skeletal divisions that make up the body’s framework?
- axial
- appendicular
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What are the 4 main parts of the appendicular skeleton?
- pelvic girdle
- shoulder girdle
- upper limbs
- lower limbs
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What are the 4 main parts of the axial skeleton?
- skull
- neck
- thorax (ribcage)
- vertebral column
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What is the tough, fibrous membrane that covers bones?
periosteum
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What is the central cylindric canal of long bones?
medullary cavity
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What is the inner trabeculated portion of the bone?
spongy (cancellous) bone
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What is the outer layer of hard tissue in bone?
compact bone