Upper Limb Flashcards
How many bones aare there in the upper limb
30 Bones
The upper limb is divided into 3
Arm
Forearm
Hand
The arm is also known as the
Brachium
The arm is located between the __ & __
Between the shoulder and the elbow
What is the largest and longest bone of the upper extremity
Humerus
The Humerus articulates with __ below
Radius & Ulna
The Humerus articulates with __ above
Scapula
Parts of the Humerus
- Head
- Greater & Lesser Tubercles
- Intertubercular Sulcus (Bicepital Groove)
- Anatomical Neck
- Deltoid Tuberosity
- Shaft
- Radial (Spiral) Groove
Which structures in the Humerus serve as attachment sites for different muscles
Greater & Lesser Tubercles
Neck of the humerus found adjacent to the head
Anatomical Neck
Neck of the humerus found between the head, tubercles, and the shaft
Surgical Neck
Area where the humerus usually fractures
Surgical Neck
Tuberosity found on the shaft of the Humerus
* Attachment point of which muscle
Deltoid Tuberosity
* Deltoid Muscle
What nerve winds around the Spiral Groove
Radial Nerve
What nerve could be possibly severed when a fracture in the shaft of the humerus occurs
Radial Nerve
Part in the distal humerus that articulates with the Ulna
Trochlea
Part of the humerus that articulates with the radius
Capitulum
Which epicondyle of the Humerus projects more?
Medial Epicondyle
Attachment sites for muscle at the Distal Humerus
Medial & Lateral Supracondylar Ridges
Depression at the distal humerus anteriorly
Coronoid Fossa
Depression at the distal humerus posteriorly
* it receives what structure
Olecranon Fossa
* Olecranon Process of the Ulna
Forearm is also known as __
Antebrachium
2 bones present at the forearm
Radius and Ulna
Function as 1 because they are connected distally & proximally
The forearm articulates with what structure proximally
Humerus
The forearm articulates with what structure distally
Wrist
Points where the radius and ulna are connected to each other making them function as 1
Radioulnar Joints (Proximal and Distal)
Structure present in between the radius and ulna
Interosseous Membrane
Radius is found on which side
Lateral
RL
Ulna is found on which side
Medial
UM
Part of the radius that articulates with the Capitulum of Humerus superiorly
Radial Head
Structure where the radial head articulates superiorly
* Gives rise to which joint that is a part of the elbow complex
Capitulum of the Humerus
* Radiocapitellar Joint
Structure where the radial head articulates medially
* Give rise to which joint
Radial Notch of the Ulna
* Prox Radioulnar Joint
Tuberosity located below the neck of the radius
* Which muscle attaches to this
Radial or Bicipital Tuberosity
* Biceps Brachii
The Ulnar Notch of the Radius articulates with ___
* location of this notch
* forms which joint
Ulnar Head
* Distal part of the Ulnar near the wrist
* Distal Radioulnar Joint
Lateral projection of the radius
Radial Styloid
Motion found in the forearm is dependent on which part
* Name the motion
Prox & Dis Radioulnar Joint
* Rotation of Radius over Ulnar: Pronation & Supination
Movement of the forearm where tha palm faces posteriorly
Pronation
P sila both posterior = pronation
Movement of the forearm where thepalm faces anteriorly
Supination
Parang naga kutsara ka ng soup
The position of the forearm in anatomical position
Supination
During pronation/supination which part serves as the axis of rotation?
Ulna
Ulna does not move
Which part of the forearm moves during pronation/supination
Radius
Longer part of the Forearm
Ulna
What is the main bone of the forearm that forms the elbow joint with the humerus
Ulna
may contributions from radius
Main bone of the forearm forming the wrist joint
Radius
Flexion and extension of the elbow joint mainly involves which bone of the forearm
Ulna
Process found at the proximal ulna
* it articulates with what fossa
Olecranon Process
* olecranon fossa
Process that fits on the coronoid fossa of the humerus
Coronoid Process
Part of the Ulna that articulates with the trochlea of the humerus
* give rise to which joint
Trochlear Notch
* Ulnohumeral Joint
The Ulnohumeral joint is the main joint for which motions
Flexion and Extension
What happens to the processes and fossa of the humerus and ulna during Full Elbow Extension
Olecranon Process (Ulna) locks into Olecranon Fossa (Humerus)
What happens to the processes and fossa of the humerus and ulna during Full Elbow Flexion
Coronoid Process (Ulna) locks into Coronoid Fossa (Humerus)
Give the following medical terms for the following parts of the hand
* Wrist
* Palm
* Fingers
- Wrist: Carpus
- Palm: Metacarpus
- Fingers: Phalanges
How many bones make up the Carpus
8 bones
Which bones make up the Proximal Carpal Row
Lateral to Medial Side (Radial –> Ulnar)
- Scaphoid
- Lunate
- Triquetrum
- Pisiform
Lateral to Medial Side (Radial –> Ulnar)
Bones that make up the Distal Carpal Row
Lateral to Medial Side (Radial –> Ulnar)
- Trapezium
- Trapezoid
- Capitate
- Hamate
Which 2 bones of the Carpus articulate with the Radius
* forms which joint
Scaphioid and Lunate
* Wrist or Radiocarpal Joint
How many bones are under metacarpals
5 bones: I - V
(Thumb - Pinky)
Parts of the Metcarpal
- Base
- Shaft
- Neck
What joint is formed from the articulation of the bases with each other
Intermetacarpal Joints
mostly plane joints - slight movement
**Metacarpals **
Joint formed from the articulation of the bases with the distal carpal row
Carpometacarpal Joints
mostly plane joints - slight movement
Metacarpals
What forms the Metacarpophalangeal Joints (Knuckles)
Articulation of the heads with the proximal phalanges
Shortest and most mobile metacarpal
I: Thumb
3 parts of the phalanges
- Base
- Shaft
- Neck
- Head
3 Different Phalanges for the fingers
- Proximal Phalanx
- Middle Phalanx
- Distal Phalanx
Which finger has only 2 phalanges?
* What phalanx is absent
Thumb
* Mid Phalanx