Biomechanics Flashcards
CPT 2024 Theory Exam
What does Anterior/Ventral mean
Front
What does Posterior/Dorsal mean
Back
What does Superior mean
Above (a reference point)
What does Inferior mean
Below (a reference point)
What does Proximal mean
Position close to centre of the body
What does Distal mean
Position farther from reference point
What does Medial mean
Position relatively closer to midline of the body
What does Lateral mean
To the side or away from the midline of the body
What does Prone mean
Lying face down
What does Supine mean
Lying on back
What does Deep mean
Further beneath surface relative to another reference point
What does Superficial mean
Closer to the surface relative to another reference point
What does Unilateral mean
Refers to only one side
What does Bilateral mean
Refers to both sides
What does Ipsilateral mean
On the same side
What does Contralateral mean
On the opposite side
What does Caudal mean
Toward bottom
What does Cephalic mean
Toward head
What does Volar mean
Relating to palm of hand or sole of the foot
What does Abduction mean
Movement away from midline
What does Adduction mean
Movement towards the midline
What does Flexion mean
Movement decreases angle between two body parts
What does Extension mean
Movement increases angle between two body parts
What is Lateral Flexion
Flexion in the frontal plane
What is Protraction
Abduction of the scapula (shoulder)
What is Retraction
Adduction of the scapula (shoulder)
What is Elevation
Movement in a superior direction
What is Depression
Movement in an inferior direction
What is Plantarflexion
Extension of the foot downward (inferiorly)
What is Dorsiflexsion
Extension of the foot upwards (superiorly)
What is External Rotation
Rotational movement away from midline
What is Internal Rotation
Rotational movement toward midline
What is Circumduction
Circular movement of a limb extending from the joint where the movement is controlled
What is Inversion
Movement of the sole of the foot toward the median plane
What is Eversion
Movement of the sole of the foot away from the median plane
What is Pronation
Turning the palm or arch of the foot down
What is Supination
Turning the palm or the arch of the foot up
What is Hyperextension
Position that extends beyond anatomical neutral
What is Ipsilateral
Same side movement
What is Contralateral
Opposite side movement
What are the three planes of motion
- Frontal 2. Sagittal 3. Transverse
How is the Frontal plane divided
Imaginary line that divides the body into front and back halves. Any lateral (side) movement parallel to the line will occur in front plane.
How is the Sagittal plane divided
Imaginary line that divides the body into right and left halves. Any forward/backward movement parallel to the line will occur in sagittal plane.
How is the Transverse plane divided
Imaginary line that divides the body into superior and inferior halves. Any rotational movement parallel to the line will occur in transverse plane.
Shoulder lat raises happen in what movement plane
Frontal
Bench press / chest press happen in what movement plane
Sagittal
Russian twists happen in what movement plane
Transverse
List 4 movements in the Frontal Plan
Abduction, Adduction, Scapula depression/elevation, Scapula upward/downward rotation, Eversion, Inversion
List 4 movements in the Sagittal Plane
Flexion, Extension, Dorsiflexion, Plantarflexion, Knee flexsion/extention, Trunk flexion/extention
List 4 movements in the Transverse Plane
Rotation (neck, torso, head), Scapular retraction/protraction, lateral rotation, medial rotation, internal/external rotation
What is Balance
Even distribution of weight
What is Equilibrium
Opposing forces influences are balanced
What is Stability
Ability to control and maintain joint movement or body position
What is Center of Gravity
Hypothetical position in the body where the combined mass appears to be concentrated and the point around which gravity appears to act
What is Muscular Force
The contraction of a muscle while exerting a force and performing work
What joints typically need greater mobility
Foot, ankle, hip, thoracic spine, shoulder, wrist
What joints typically need greater stability
Knee, lumbar spine, cervical spine, elbow
What is an Agonist Muscle
Prime mover
What is an Antagonist Muscle
Opposing muscle to prime mover
What is the origin of a muscle
The proximal (closest to midline of the body) muscular attachment point to a bone
What is the Insertion point of a muscle
The distal muscular attachment point to a bone
What is Sherrington’s Law of Reciprocal Inhibition
A law that states for every muscle activation there is a corresponding inhibition of the opposing muscle
What is the origin and insertion points for Biceps Brachii
Origin: Long head Supraglenoid tubercle & upper lip of glenoid fossa / Short head coracoid process of scapula & upper lip of glenoid fossa
Insertion: Tuberosity of radius and bicipital aponeurosis
What is the origin and insertion points for Brachialis
Origin: Distal half of anterior portion of Humerus
Insertion: Coronoid process of the Ulna
What is the origin and insertion points for Triceps Brachii
Origin:
- Long Head: Infraglenoid tubercle below inferior lip of glenoid fossa of scapula
- Lateral Head: Upper half of posterior surface of Humerus
- Medial Head: Distal 2/3 of posterior surface of humerus
Insertion: Olecranon process of the Ulna
Muscles of the upper arm
- Humerus (bone)
- Biceps brachii (long & short head)
- Triceps brachii (lateral, long and medial head)
- Brachialis
Muscles of the forearm (Anterior Superficial)
Brachioradialis
Pronator Teres
Flexor Carpi Radialis
Palmaris Longus
Flexor Capri ulnaris
Muscles of the forearm (Posterior Superficial)
Brachioradialis
Extensor Carpi Radialis Longus
Extensor Carpi Radialis Brevis
Flexor Carpi Ulnaris
Extensor Digitorum
Muscles of the shoulder
Supraspinarus
Spine of scapula
Teres minor
Infraspinatus
Subscapularis
Muscles of the deltoid
Posterior deltoid
Lateral Deltoid
Anterior deltoid
What is the origin and insertion points for Deltoid
Origin:
Anterior: Anterior lateral third of clavical
Middle: Lateral aspects of acromion
Inferior: Inferior edge of spine scapula
Insertion:
Anterior: Deltoid tuberosity on lateral humerus
Middle: Deltoid tuberosity on lateral humerus
Inferior: Deltoid tuberosity on lateral humerus
What is the origin and insertion points for Subscapularis
Origin: Entire anterior surface of subscapular fossa
Insertion: Lesser tubercle of humerus
Muscles of the back
Trapezius
Latissimus Dorsi
External Obliques
Semispinalis capitis
Semispinalis cervicis
Quadratus lumboum
Rhombiod minor and major
Multifidus
Spinalis
Longissimus
Illiocostalis
What three muscles make up the erector spinae group
Spinalis, longissimus, Illocostalis
What is the origin and insertion points for Latissimus Dorsi
Origin: Posterior crest of ilium, back of sacrum and spinous process of lumbar and lower T6-T12
Insertion: Medial side of the intertubercular groove of humerus
What is the origin and insertion points for Trapezius
Origin:
Upper: Base of skull,
Middle: Spinous process of 7C and T1-T3
Lower: Spinous process of T4-T12
Insertion
Upper: Posterior aspect of the lateral clavicle
Middle: Medial border of the acromion process
Lower: Base of scapular spine
Muscles of the Midsection
External oblique,
Internal oblique
Rectus abdominis
Transverse abdominis
Linea alba
Linea semilunaris
Rectus sheath
Erector spinae
What is the origin and insertion points for Rectus Abdominis
Origin: Pubis
Insertion: Inferior surfaces of costal cartilages
What is the origin and insertion points for Transverse Abdominis
Origin: Lower ribs, iliac crest and lumbodorsal fascia
Insertion: Linea alba and pubis
Muscles of the chest
Pectoralis major & minor
Subclavius
Muscles of the upper leg (anterior)
Tensor fasciae latea
Sartorius
Adductor longus
Gracilis
Rectus femoris
Vastus Lateralis
Vastus Medialis
Muscles of the hip
Psoas
Iliacus
Muscles of the upper leg (posterior)
Gluteus medius, minimus and maximus
Gracilis
Vastus lateralis
Biceps femoris
Semitendinosus
Semimembranosus
Muscles of the lower leg
Tibialis anterior and posterior
Peroneus longus
Extensor digitorum longus
Extensor Hallucis longus
Gastrocnemius
Soleus
Peroneus Brevis