Anatomy - Overview
Anatomical Terminology
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Normal anatomical Position:

Standing erect, feet together, arms at sides, palms facing forwards

Planes:

Median: divides the body into two equal halves (right and left)
Sagittal: parallel to median
Coronal: right angle to median, dividing the body into front and back portions
Horizontal/Transverse: at right angles to median, sagittal and coronal dividing body into upper and lower portions

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Sections (body or parts) -  irrespective of position

Longitudinal – along length
Vertical – from vertex/head/crown
Transverse - along width
Oblique – at an angle

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Relationship (body in anatomical position)

Anterior (ventral)
Posterior (dorsal)
Superior (cephalic)
Inferior (caudal)
Medial – closer to median (e.g. little finger)
Lateral – further away from median (e.g. little toe)

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Terms of Comparison

Proximal – nearer point of attachment
Distal – further away form the attachment point

(These terms are generally used in extremities)

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Superficial – nearer the surface
Deep -

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External - outer part/surface

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Internal/Interior – inner part/ on the inside

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Ipsilateral – same side
Contralateral – opposite side

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Terms of Movement

Flexion - decrease in angle/bending/fetal position

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Extension – opposite of flexion, straightening

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Abduction - Arm Abducted Abduction – moving away from point of reference - Arm Abducted

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Fingers Abducted Fingers Abducted – middle finger is the reference point (movements of thumb are at right angles to fingers, here thumb is extended

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Index Finger Abducted

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Opposition - moving thumb to any of the fingers as in pinching

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Protract – push forward, Retract – pull back

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Depress – lower as in opening mouth

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Elevate - raise (as in shrugging shoulders)

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Inversion – turn foot so that sole faces in, movement at subtalar joint

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Neutral

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Eversion – sole of the foot is turned outwards

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Plantarflexion – foot turned so that sole/toes point towards ground (corresponds to flexion of hand) (movement at ankle joint)

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Dorsiflexion – foot towards leg, close pack position – maximal congruence of bones (corresponds to extension of  hand/wrist)

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Supination – palm faces forwards/up (movement at radioulnar joints, radius moves and spirals ulna)

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Pronation – palm faces down/backwards (opposite of supination

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Some Commonly Used Words

Axilla - armpit
Brachium – arm (between shoulder and elbow)
Antibrachium – forearm (between elbow and wrist)
Cubitus - elbow
Mammary Gland – gland in breast (mamma = breast)
Pecten – comb (Latin

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Lumbar – loin (between ribs and pelvis)
Inguen/Inguinal – relating to groin
Carpus – wrist/carpal bones
Manus – hand
Palmar – pertaining to palm (between wrist and fingers)
Pollex – thumb
Index – index finger/pointing finger
Little/Minimus - smallest

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Natis – buttock
Poples – popliteal – related to back of knee
Perone – skewer – fibula
Thigh – between hip and knee
Knee joint – largest joint, between femur and tibial condyles and femur and patella
Leg – between knee and ankle

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Nares – nostrils – anterior opening on either side of nasal septum
Os/Ora – mouth
Labium – lip

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Buccal – pertaining to cheek
Nucha – nape – back of neck
Parietes – body wall

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Cranium – skull without mandible
Mentis - chin
Hyoid – u or v shaped bone (not attached to any other bone)
Occiput – back of head
Sternum – breast bone
Clavicle – key – collar bone

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Location A? Where is it? – dorsal surface of foot

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What would you call an artery at location A? Answer... Dorsalis pedis

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Osteology: structure of bones

   

Skeleton that gives form to the body is made up of bone and cartilage (specialised connective tissue). Bone is stronger than reinforced concrete.
 
Regional – from one region e.g. thorax
 
Axial – skull, vertebrae, sternum and ribs (primary)

Appendicular – of limbs

Shape:
Long – in limbs, have medullary cavity e.g. metacarpals, phalanges
Short – e.g. carpals and tarsals
Flat – skull bones, scapulae
Sesamoid – contained within tendon of muscles e.g. patella
Accessary – additional e.g sutural bones (generally in lambdoid sututre)
Irregular – not the above e.g. vertebrae

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Elevations:

Tubercle/tuberosity – small bump on humerus (trochanter – large bump on femur)
External occipital protuberance – on outside of occipital bone
Spinous process - thorn like short projection
Crest/Ridge - e.g. iliac crest

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Depressions

Fossa – trench or ditch, depression e.g. infraspinous fossa
Sulcus – any long groove or furrow e.g.intertubercular sulcus
Notch – an indentation
Foramen – an aperture/hole/perforation in bone or membrane e.g.f.magnum
Canal – a tube/duct/channel (both ends open)
Meatus – a tube with one end closed e.g. external auditory meatus

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JointsClassification based on substance uniting two or more bones

Fibrous e.g. sutures, tibiofibular joint
Cartilagenous e.g. intervertebral
Synovial – commonest, most mobile e.g. shoulder joint

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Scapula

Costal Surface – coracoid (crooked finger) process, superior, lateral and medial borders

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Dorsal Surface – spinous process and its lateral flattened part acromion, supra and infra spinous fossa

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Lateral Aspect – glenoid cavity/fossa for articulating with the humeral head

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Humerus

Proximal (anterior) – head, tubercles and intertubercular groove

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Distal (anterior) – trochlea (pulley) is medial and articulates with ulna, capitulum is lateral condyle joins with radius, medial condyle is larger and palpable

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Distal (posterior) – olecranon fossa for similar named process of ulna

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Radius and Ulna

Olecranon process of ulna and head of radius, styloid process of radius and ulna

What would you call a membrane connecting the two bones?

(Answer on next image – interosseous membrane)

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Hand

Phalanges – 3 in each finger but 2 in thumb

Metacarpals – 5 in region of palm (knuckles formed by their heads)

Carpals – 8 bones arranged in two rows

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Hipbone (lateral aspect)

Formed by ilium, ischium and pubis

Sit on ischial tuberosity

All 3 take part in formation of acetabulum

ASIS = anterior superior iliac spine is palpable

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Hipbone (medial aspect)

Obturator foramen is covered by a membrane

Iliac fossa is filled by iliacus muscle

Greater sciatic notch is formed by ilium and ischium

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Pelvis

Bony pelvis formed by two hip bones and sacrum

Pelvis means basin

Bottom formed by pelvic diaphragm

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Femur

Largest bone,

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Distal

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Femur (proximal part)

Head fits in acetabulum to form hip joint

Neck often fractured in elderly

Two large projections are trochanters

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Medial condyle is larger than lateral

At end of condyle is epicondyle

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Tibia and Fibula

Correspond to radius and ulna

Connected by interosseous membrane

Distal ends form bumps of ankles – malleoli

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Tibia and fibula – proximal part

Tibial tuberosity gives attachment to quadriceps tendon

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Tibia and fibula (distal)

Note grooves for articulation with talus

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Vertebrae 1

Cervical – 7, small body

Thoracic – 12, ribs attached here

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Vertebrae 2

Lumbar -5, large body for weight bearing

Sacral – 5, fused by 20-25 years

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Sacrum

Sacral foramina are for nerves and blood vessels

(correspond to intervertebral foramina)

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Sternum

Manubrium joins with body at sternal angle (vertebral level T4)

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Ribs

12 pairs of ribs attached to thoracic vertebrae

1-7 articulate with sternum in front – true ribs

8-10 articulate with cartilage of preceding rib – false ribs

11 – 12 anterior ends are free – floating ribs

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