Trick to Remember Types of Skeleton System

Bone and Cartilaginous frame work of body.

Function of skeleton System :

1. It help in movement.
2. Reservoirs of minerals i.e. – Calcium.
3. Protection to Visceral organ.
4. Homopoiesis (Synthesis of blood )

**Trick to remember function of Skeleton Systems

Tricks – MRP Hai.

M- Movement
R- Reservoirs of minerals
P- Protection to Visceral organ

Division of Skeleton System

A. Exo – skeleton –

  • Out side the body
  • Ectodermal in origin
  • Hair, Nail.

B. Endo – Skeleton

  • Mesodermal in origin.
  • inside the body i.e. Bone

Endo – Skeleton

Further divided in two class –

1. Appendicular Skeleton System :

A) Girdle –

  • *Pelvic girdle
  • *Pectoral girdle

B) Limbs –

  • * Upper Limbs
  • * Lower Limbs

2. Axial Skeleton –

  • a. Skull
  • b. Vertebral Column
  • c. Ribs
  • d. Sternum

Axial Skeleton

a. Skull

I. Cranium ( 8 bone )

Tricks – PEST OF

P – Parietal Bone ( 2 )
E – Ethmoid Bone ( 1 )
S – Sphenoid Bone ( 1)
T – Temporal Bone ( 2)
O – Occipital Bone (1)
F – Frontal Bone (1)

II. Facial Bone ( Tricks

Tricks – VAIN MM PLZ 

V – Vomer (1)
A – Auditory Ossicals (3×2) e.g. Mallecus, incus, Stapes.. (Tricks – MIS)
I – Infra Nasal (2)
N – Nasal (2)

M – Maxilla (2)
M – Mandible (1)

P – Palatine ( 2)
L – Lacrimal ( 2)
Z – Zygomatic ( 2)

III. Hyoid Bone ( 1 Bone )

b. Vertebral Coloumn

C 7 – Cervical Vertebra ( 7 )
T 12- Thoracic Vertebra (12 )
L 5 – Lumbar (5 )
S 5 – Sacral ( 5 )
C 4 – Coccxy (4 )

# function of Vertebral Columns :

  • Trick – SARP

    S – Support to skull base..
    A – attachment to muscles.
    R – Ribes attachment.
    P – Protection to spinal Cords.

    c. Ribea cage / Thoracic cage

  • Ribes are called as Bicephalic ( two joing site on dorsal side.
  • Head will join to Vertebra.
  • Ribes are 12 pairs in Numbers.Classification of Fibes –
  • True Ribes – 1st 7 Ribes are true Ribes
  • False Ribes – 8,9 & 10 th are false Ribes because they false with 7 Ribes.
  • Floating Ribes – 11th, 12th pair are called as floating Ribes.
    Note – one Ribes in attached to 2 Vertibeal coloumn at dorsal side.

    Appendicular Skeleton

    a. Girdles

    • Pelvic Girdles
    • Pectoral Girdles

    I. Pectoral Girdles –

      – scapula – flat bone
      – also called as shoulder blades.
      – it has acromion Process articulate with clavicle..
      – it has carcoid process.
      – it has glenoid cavity – Articulate with head of humerus to form shoulder joint.
      * Clavicle – also called as collar bone.

    b. Limbs

  • Upper limbs
  • Lower Limbs

    I. Upper limbs

    • *Humerus
      • – Head
      • – shaft
      • – condyle
  • Head – Articulate with glenoid cavity and form shoulder joint ( ball and socket joint. )
  • Deltoid Ridge – Provides attachment to deltoid muscles
  • *Olecranon fossa – Accomodate with Olecranon process of ulna.( Back side lower end of humerus )
  • * Coronoid fossa – Accomodate with Coronoid process of ulna.
    ( Lower end of humerus )
  • * Radius / Ulna : Tricks to learn Wrist bone :-
    Trick : She look too pretty try to catch her 

    S – Scaphoid
    L – Lunate
    T – Try quetrum
    P – pisiform
    T – Trape…
    T – Trapezoid
    C – Capitals
    H – Hemats

    Each limbs contains 30 bones..

    Lower Appendicular :

    A. Pelvic girdle :

      – Made of 2 coxa
      – each coxa is formed of 3 bone
      – iliun, ischium, pubis
      – each coxa has cavity k/n as Aceta bulum ( join with head of former to form hip joint i.e. – ball and shocket joint )

    B. Lower limbs :

    • #femur –
      – Longgest & strongest bone of the body.

    – It has true part-

    • 1. Head – it articulate with Aceta bulum to ball and shocket joint.
    • 2. shaft
    • 3. Condyl

    # Trick to learn tarsal bones

    Tricks – Tiger cub Needs MILCC

    T – Talus
    Cub – cuboid
    Needs – Navicular
    M – Mideal
    I – Intermediate
    L – Lateral
    C – Conform
    C – Colcaneum..

    #Disease of skeleton System :

    1. Gout – Uric acid increase in blood.
    2. Osteoporosis – due to deficiency of Ca2+ in bone.
    3. Myasthania Gravis – Receptor are blocked by inhibitor at neuron muscular junction so movement slowly start..
    4. Arthritis – inflammation of joint.
    5. Rickets – bowing of bone in child due to deficiency of vitamins D.
    6. Sprain – Damage in ligament.
    7. Osteomalocia – bowing of bone in adult, due to deficiency of vitamins D.
    8. Tetany – irregular contraction of muscle due to deficiency of Ca2+ in blood.

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