Appendicular skeleton Flashcards
The Pectoral (shoulder) Girdle is composed of?
Clavicle and scapula
Pectoral Girdle:
_______: (collarbone)- medium-sized flat bone on anterior shoulder
o ______ – articulates w/ the manubrium – _______
-Only joint between axial and appendicular skeleton
Clavicle
Sternal (medial) end
Sternoclavicular joint
Clavicle
______: articulates w/ the manubrium – Sternoclavicular joint
* Only joint between axial and appendicular skeleton
Sternal (medial) end
Clavicle
_______;articulates w/ acromion process of the scapula forming the acromioclavicular (AC) joint
Acrominal (lateral) end
Clavicle
_____; on inferior surface near acromial end. Attaches to conoid ligament that connects with corocoid process of scapula.
Conoid tubercle or Coracoid tuberosity
Pectoral Girdle:
______: (shoulder blade)- large flat bone with triangular body on the posterior of the acromial region (shoulder)
Scapula
Scapula:
_____:lateral angle contains fossa that articulates with head of humerus to form shoulder
Glenoid Cavity
Scapula:
______: extends from lateral angle to superior angle
Superior border
Scapula:
______: extends from lateral angle to inferior angle
Lateral (axillary) border
Scapula:
_____:extends from superior angle to inferior angle
Medial (vertebral) border
Scapula:
_____; flat projection on superior lateral angle articulates with clavicle
Acromion (acromial process)
Scapula:
_____;projects anterior from lateral angle, serves as origin for short head of biceps brachii, and coracobrachialis, insertion for pectoralis minor
Coracoid process
Scapula:
______:ridge on posterior superior of body extending from acromion to medial border, origin for deltoid muscle, and insertion for trapezius separates the Supraspinous fossa from Infraspinous fossa that are origins of supraspinatus and infraspinatus
Scapular Spine
Scapula:
______: anterior surface and origin of subscapularis muscle
Subscapular Fossa
Appendicular Skeleton : Upper Extremity
_______________: large long bone in brachial region
Following are characteristic:
o _______-articulates with glenoid cavity
o ________- border of capsule for shoulder joint
o ________- epiphyseal line
o _______ tubercle- rough projection on lateral proximal end serves as insertion for supraspinatus, infraspinatus, and teres minor muscles of the rotator cuff
o ________ tubercle- medial to greater serves as the insertion for subscapularis muscle
o ________ sulcus (groove)- space between greater and lesser tubercle serves as insertion for pectoralis major, latissimus dorsi, and teres major
o ________ tuberosity- insertion for deltoid muscle on the lateral diaphysis just proximal to the middle
o _________ fossa- depression on lateral side of anterior surface at the distal epiphysis accommodates the head of the radius during flexion of the elbow
o _________ fossa- depression on medial side of anterior surface at the distal epiphysis accommodates the coronoid process of the ulna during flexion of the elbow
o ________ fossa- depression on posterior surface at the distal epiphysis accommodates the olecranon process of ulna during extension
of the elbow.
o _________- articular surface on medial side of distal
epiphyhsis that articulates with ulna to form the elbow joint
o ________- articular surface on lateral side of distal epiphysis
o ________- ridge superior to trochlea serves as origin for muscles
of the forearm that flex the wrist and fingers like flexor carpi radialis, f. c.
ulnaris, and f. digitorum superficialis
o________- ridge superior to capitulum serves as origin for muscles of the forearm the extend the wrist and fingers like extensor carpi radialis brevis, e. c. ulnaris, and extensor digitorum
*****Humerus Head Anatomical neck Surgical neck Greater tubercle Lesser tubercle Intertubercular sulcus (groove) Deltoid tuberosity Radial fossa Coronoid fossa Olecranon fossa Trochlea Capitulum Medial epicondyle Lateral epicondyle
Appendicular Skeleton : Upper Extremity
___________-medium sized long bone in medial antebrachial region.
Following are characteristic:
o ______- distal epiphysis
o ______ process- posterior of proximal epiphysis and insertion for triceps
o ________ process - anterior of proximal epiphysis
o__________ notch- articular surface of proximal epiphysis
o _______- smooth indentation on lateral side near the proximal end accommodates the head of the radius
o ________ process- small extension on posterior of distal epiphysis stabilizes the wrist
o ________- rough projection of bone on anterior just inferior to coronoid p. serves as insertion for the brachialis muscle performs flexion of the elbow
******Ulna Head Olecranon process Coronoid process Trochlear notch Radial notch Styloid process Ulnar tuberosity
Appendicular Skeleton : Upper Extremity
_____________: medium sized long bone in lateral antebrachial region.
o _____- proximal epiphysis
o 21)_______________ tuberosity- rough projection of bone on the
anterior medial surface of the diaphysis just inferior to the radial head
serves as insertion for biceps brachii
o 22)________________ notch- smooth indentation on the medial side
near the distal epiphysis
o ______- small projection of bone extending distal from the
lateral side of the distal epiphysis to stabilize the wrist
******Radial ( Radius) Head Radial Ulnar Styloid process
Appendicular Skeleton : Upper Extremity
_______: Small short bones in the wrist
From lateral to medial
Proximal Row: ______ – Lunate – Triquetrum – Pisiform
Distal Row: Trapezium – Trapezoid – Capitate – _______
*****Carpal Bones
Scaphoid
Hamate
Appendicular Skeleton : Upper Extremity
_________: Small long bones in the palmar region
Number digits 1 to 5 from lateral to medial:
3
Pollex or Thumb = 1st metacarpal / Little finger = 5th metacarpal
Metacarpals
Appendicular Skeleton : Upper Extremity:
______small long bones in digits # same as metacarpals: 1 to 5 from lateral to medial
Each digit has a Proximal – Middle & Distal Phalanx
(except for the Pollex 1st digit had just proximal and distal)
Phalanges
What is the pelvic girdle formed by?
Two halves each called the coxal bones (Os Coxa)
Coxal bone (Os Coxa).
Each Os coxa is formed by the fusion of three separate bones: What are they?
Ilium
Ischium
Pubis
What part of the coxal bone is this?
________: bone that forms the flat superior region of the coxal bone
Characteristics
o ______- ridge on superior end is the origin for the internal abdominal oblique and insertion for external abdominal oblique that perform flexion and rotation of the vertebral column
o _______- smooth anterior surface origin of Iliacus muscle that performs hip flexion
*_______ spine- small pointed process at anterior border of iliac crest and origin of sartorius muscle that laterally rotates and abducts hip
o________spine- origin of rectus femoris of the quadriceps group that extend the knee
o _________ spine- small pointed process at posterior border of iliac crest.
o ______ spine- small pointed process at the superior border of the greater sciatic notch
o ________ notch- large curve on posterior where the largest nerve in the body travels
o ________- articulates with head of femur to form hip joint.
- Ilium
- Iliac crest
- iliac fossa
- Anterior superior iliac spine
- Anterior inferior iliac spine
- Posterior inferior iliac spine
- greater sciatic notch
- Acetabulum
What part of the coxal bone is this?
_______: bone that forms the inferior posterior region of the coxal bone
o _____- small process at inferior border of greater sciatic notch and superior border of Lesser sciatic notch
o _______ foramen- large opening are origin of obturator muscles that assist with lateral rotation and abduction of hip
o ______- rough projection on posterior inferior is origin for hamstrings muscles that flex the knee (biceps femoris long head, semimembranosus, and semitendinosus)
o _____- projects anterior along the inferior border to articulate with the inferior pubic ramus
- ***Ischium
- Ischial spine
- obturator foramen
- Ischial tuberosity
- Ischial ramus
