Anatomical Terms Flashcards
Anatomical Position
The starting position for all muscle actions:
The body is standing upright with arms at the sides and the palms of the hand facing forward (supplanted).
All muscle actions are given from this point
Arms “akimbo” Position
Normal standing position with arms by side and palms facing thighs; flex elbow; forearm moves in the frontal plane
Planes and Axes
All movements take place parallel to a plane.
All movements take place around an axis.
Sagittal Plane
Any plane parallel to the median plane. Movements in the sagittal plane rotate around the frontal axis.
Transverse (Horizontal) Plane
Divides the body into superior (anterior) and inferior (posterior) sections. Movements in the transverse plane rotate around the vertical axis.
Frontal Plane
Divides the body into front and back. Movements in the frontal plane rotate around the sagittal axis.
Median (Mid-sagittal) Plane
A sagittal plane passing through the body from anterior to posterior, dividing the body into two equal halves.
Anterior (or ventral)
Towards the front of the body
Posterior (or dorsal)
Toward the back of the body
Medial
Closer to the median plane than some other point
Lateral
away from the median plane relative to some other point
Superior (or cranial)
towards the head or closer to the head than some other point
Inferior (or caudal)
towards the tail, or farther from the head than some other point
Central
In the center of the body.
Peripheral
Towards the surface of the body
Distal
Distant form a point of reference
Proximal
Near to a point of reference
Cardio
refers to the heart
Cephalo
refers to the head
Chondro
refers to cartilage
Encephalon
refers to the brain
Gastro
refers to the stomach
Hepato
refers to the liver
Myo
refers to the muscle
Neuro
refers to nerves
Osseo
refers to bone
Pneumo
refers to lungs
Reno
refers to kidneys
Uro
refers to the urinary system
Vaso
refers to vessels
Antibrachial
forearm
Axilla
armpit
Brachial
shoulder to elbow
Calcaneal
heel
Carpal
wrist
Cervical
Neck
Cubital
Elbow
Femoral
thigh
Hallux
Great toe
Lumbar
Small of the back
Metacarpal
Hand
Metatarsal
Foot
Nuchae
Back of the neck
Pectoral
Anterior chest
Peroneal
Area of the fibula
Plantar
Sole of the foot
Pollex
Thumb
Popliteal
Back of the knee
Tarsal
Ankle
Thoracic
Chest
Vaso
Vessels
Volar
Palm of the hand.
Condyle
A smooth, rounded prominence covered with articular cartilage
Crest
A ridge
Epicondyle
Above a condyle
Facet
A small, smooth cartilage covered area
Foramen
A hole through a bone
Fossa
A depression or hollow
Head
A smooth, rounded end of a bone
Line
A long narrow ridge
Neck
A constriction below the head of a bone
Sinus
A mucous membrane lined cavity in a bone, filled with air
Spine
A sharp projection
Stylus
A pencil-point projection
Tubercle, Tuberosity, Trochanter
An eminence or enlargement
Long Bones
Are characterized by the fact that they are longer than they are wide and generally have tubular shafts and articular surfaces at each end. Function: locomotion.
Short Bones
Are shorter than long bones and have generally tubular shafts and articular surfaces at each end. Short bones allow flexibility
Flat bones
Are flat and relatively thin and have broad, flat surfaces. Function: protection
Irregular bones
Almost any bone that is not a long bone, a short bone, or a flat bone. Ex: entire vertebral column, eight carpal bones, seven tarsal bones, patella
Functions of bones
- Blood cells are made in the marrow of bones (in their centers) and released into the blood stream
- When a body doesn’t ingest enough calcium (as during pregnancy or in post menopausal women), the body uses stored calcium by taking it from the bones. This process has the effect of weakening the bones, which is why it is important to get enough calcium when the body’s needs are high.
- The skeleton provides a support for organs and gives shape to the body.
Bony Markings
Markings on the bones. Characterized by ridges, depressions, holes, rough or smooth areas. These markings are usually the origin or insertion of muscles.
Frontal Bone - Bony Markings
None
Parietal bone - Bony Markings
None
Temporal Bone - Bony Markings
Mastoid process
Occipital Bone - Bony Markings
- Occipital protuberance
- Superior nuchal lines
- Inferior nuchal lines
- Medial nuchal line
Facial bones - Bony Markings
None
Sternum - Bony Markings
- Manubrium
- Body of sternum
- Xiphoid process
- Clavicular notch
Clavicle - Bony Markings
- Sternal end
2. Accromial end
Ribs (12 pairs) - Bony Markings
- Head
- Neck
- Angle
- Shaft
- Costal cartilage
Vertebra, Cervical - Bony Markings
- Body
- Superior articular process
- Inferior articular process
- Transverse process
- Transverse foramen
- Vertebral foramen
- Anterior tubercle
- Posterior tubercle
- Spiney process
Vertebra, Thoracic - Bony Markings
- Body
- Superior articular process
- Transverse process
- Inferior articular process
- Vertebral foramen
- Spiney process
- Pedicle
- Superior demifacet
- Inferior demifacet
Vertebra, Lumbar - Bony Markings
- Body
- Superior articular process
- Inferior articular process
- Transverse process
- vertebral foramen
- Spiney process
- Pedicle
Sacrum - Bony Markings
None
Coccyx - Bony Markings
None
Scapula - Bony Markings
- Inferior angle
- Vertebral border
- Superior angle
- Superior border
- Scapula notch
- Coracoid process
- Glenoid fossa (cavity)
- Supraglenoid tubercle
- Infraglenoid tubercle
- Axillary border
- Spine
- Acromion process
- Supraspinatus fossa
- Infraspinatus fossa
- Subscapular fossa
Humerus - Bony Markings
- Head
- Anatomical neck
- Greater tuberosity
- Lesser tuberosity
- Crest of the greater tuberosity
- Crest of the lesser tuberosity
- Surgical neck
- Deltoid tuberosity
- Lateral epicondyle
- Lateral supracondylar ridge
- Medial epicondyle
- Medial supracondylar ridge
- Trochlear
- Olecranon fossa
- Radial fossa
- Coronoid fossa
- Capitulum
Radius - Bony Markings
- Head
- Radial tuberosity
- Styloid process
Ulna - Bony Markings
- Olecranon process
- Radial notch
- Semilunal (trochlear) notch
- Coronoid process
- Ulna tuberosity
- Supinator crest
- Styloid process
Femur - Bony Markings
- Head
- Neck
- Intertrochanteric line
- Greater trochanter
- Intertrochanteric crest
- Intercondylar fossa
- Lesser trochanter
- Gluteal line
9, Pectineal line - Linea aspera
- Medial epicondylar ridge
- Lateral epicondylar ridge
- Adductor tubercle
- Medial epicondyle
- Lateral epicondyle
- Medial condyle
- Lateral condyle
Tibia - Bony Markings
- Lateral condyle
- Medial condyle
- Intercondyle emminence
- Anterior tuberosity
- Popliteal surface
- Popliteal line
- Anterior crest
- Medial malleous
Fibula - Bony Markings
- Head
2. Lateral malleous
Arthrology
The branch of anatomy that deals with joints or articulation.
Synarthrosis joints (juncturae fibrosae)
Immoveable joints. Sometimes the bones have fused together. Ex: innominate bone made up of ilium, ischium, & pubic bones. The joints between these bones are called sutures.
Amphiarthosis joints (juncturae cartilagieae)
Joints with slight movement.
2 types:
1. Symphysis (cartilaginous) joints. ex: the junction between the manubrium and the body of the sternum
2. Syndesmosis (ligamentous) joints. ex: coraco-acromial joint (a ligament joins the coracoid process with the acromion process)
Diarthrosis joints (juncturae synoviales)
Free movement joints (sometimes called a true joint)
- Articular surfaces of bones (ends of bones are covered with cartilage)
- Articular disk. A disk or meniscus may be situated between dissimilar surfaces to facilitate free movement
- Articular capsule. A ligamentus capsule surrounds the joint and contains synovial fluid
- A synovial membrane lines the articular capsule containing the synovial fluid.
- Ligaments which run from one bone to the other which bind and stabilize the joint.Six types of Diarthrosis joints
6 types of diarthrosis joints:
- Gliding joint (arthrodia or orticulatatio plana) ex: carpal and tarsal bones
- Hinge joint (ginglymus) ex: interphalangeal joints, humerus and ulna, knee and ankle joints.
- Pivot joint (trochoid). ex: radioulnar joint (where the
- Ball and socket joint (sppheroidea or enarthrosis). ex: shoulder and hip
- Saddle joint (articulatio sellaris). opposing bones that come together are convex and concave. ex: thumb
- Condyloid joint (articulatio ellipsoidea). condyle of one bone fits into an elliptical cavity of another bone. ex: wrist joint with radius and scaphoid carpal.
Body parts that flex, extend, and hyperextend
- Arm
- Head
- Toe
- Spine
- Finger
- Hip-leg
- Wrist
Body parts that only flex and extend
- Elbow
- Knee
- Thumb
Scapula actions
- Adduction
- Elevation
- Downward rotation
- Abduction
- Depression
- Upward rotation
Body parts that adduct and abduct
- Arm
- Hip-leg
- Thumb
- Horizontal arm
- Finger
- Toe
Body parts that rotate
- Spine (left and right)
- Head (left and right)
- Arm (internal and external)
- Hip-leg (internal and external)
Body parts that laterally flex
- Head
2. Spine
Miscellaneous body actions
- Forearm supination
- Ankle dorsiflexion
- Ankle eversion
- Wrist radial flexion
- Thumb-finger opposition
- Forearm pronation
- Ankle plantar flexion
- Ankle inversion
- Wrist ulnar flexion