Matching Pairs Unit 2 Part 3: The Appendicular SkeletonOnline version Information on the appendicular portion of the skeleton and its features by Abigail Scott 1 Bones of the Appendicular Skeleton 2 Functions of the Appendicular Skeleton Vertical support, support the head, protect the spinal cord Upper: Clavicle, Scapula, Humerus, Radius, Ulna, Carpals, Metacarpals, Phalanges Lower: Coxa, Femur, Tibia, Fibula, Tarsals, Metatarsals, Phalanges 1 Sternal End 2 Infraspinous Fossa 3 Acromial Process 4 Scapular Spine 5 Consists of 6 Clavicle 7 Clavicle Features 8 Scapula 9 Subscapular Fossa 10 Fossae 11 Scapula Features 12 Pectoral Girdle (Shoulder) 13 Glenoid Fossa 14 Coracoid Process 15 Supraspinous Fossa 16 Acromial End Clavicle (2) & Scapula (2) Articulates with the acromial process of the scapula = Acromioclavicular joint Inferior to the scapular spine Site of muscle attachment (infraspinatus) The ridge between Supraspinous & Infraspinous fossae Site of muscle attachment (trapezius, etc.) Lateral For head of humerus Articulates with the clavicular notch of the manubrium (sternum) = Sternoclavicular joint superior to the scapular spine Site of muscle attachment (supraspinatus) Anterior side of the scapula (closest to ribcage) Site of muscle attachment (subscapularis) "shoulder blade" "collarbone" LARGER lateral projection, more posterior Articulates with the acromial end of the clavicle = Acromioclavicular joint Supraspinous, Infraspinous, Subscapular, & Glenoid Smaller lateral projection, more anterior Site of muscle attachment (pectoralis minor & biceps brachii) Sternal end & acromial end Attaches the upper limbs to the trunk (the sternum) Acromial Process, Coracoid Process, Scapular Spine, & Fossae 1 Phalanges 2 Carpals 3 Parts of the Upper Limb 4 Humerus Components 5 Radius & Ulna 6 Metacarpals 7 Metacarpals Components 8 Carpals Components 9 Radius Components 10 Humerus 11 Phalanges Components 12 Ulna Components Upper Arm (brachium) Head, Radial Tuberosity, Ulnar Notch, Carpal Surface, Bones of the fingers Bones of the wrist Forearm (antebrachium) Bones of the palms Humerus, Radius, Ulna, Carpals, Metacarpals, & Phalanges 8 in total; Only need to know scaphoid Trochlear Notch, Olercranon, Ulnar Tuberosity, Radial Notch, Head Head, Greater Tubercle, Lesser Tubercle, Deltoid Tuberosity, Medial Epicondyle, Lateral Condyle, Capitulum, Trochlea, Olecranon Fossa 5 in total; Not named but numbered I (Lateral, thumb) - V (Medial, pinky) 14 in total; 5 proximal, 4 middle, & 5 distal; numbered 1-5 from thumb to pinky - proximal & distal; numbered 2-4 from index to pinky - middle 1 Iliac Fossa 2 Pubic Symphysis 3 Ischium Features 4 Ischium 5 Ischial Tuberosity 6 Bones of the Os Coxa 7 Components of Pelvic Girdle 8 Ilium Features 9 Pelvic Girdle 10 Iliac Crest 11 Ilium 12 Auricular Surface 13 Pubis 14 Os Coxa Inferior, posterior portion of the coxa What you put your hands on when you rest your hands on your “hips” Site of muscle attachment Articulates with the auricular surface of the sacrum = sacroiliac (SI) joint Large, smooth, concave surface Site of muscle attachment (internal hip muscles) attaches lower limbs to the trunk (sacrum), supports body weight, protects pelvic organs Iliac Crest, Iliac Fossa, Auricular Surface 3 bones that fuse during puberty at the acetabulum (hip joint) 2 Coxa Inferior, anterior portion of the coxa Articulates with the other coxa at the pubic symphysis What you sit on (“sits bone”) Site of muscle attachment (adductor magnus, hamstrings) Ilium, Ischium, Pubis Ischial Tuberosity Largest of the 3 bones; Superior portions of the coxa; Articulates with the sacrum fibrocartilage disk absorbs shock while walking & allows for childbirth 1 Tarsals 2 Femur 3 Components of the Fibula 4 Fibula 5 Phalanges 6 Components of the Lower Limb 7 Metatarsals 8 Components of the Femur 9 Components of the Patella 10 Components of the Metatarsals 11 Components of the Tibia 12 Tibia 13 Patella 14 Components of the Phalanges 15 Components of the Tarsals Bones of the toes Bigger of the lower leg bones; Medial bone 14 in total; 5 proximal, 4 middle, & 5 distal; numbered 1-5 from thumb to pinky - proximal & distal; numbered 2-4 from index to pinky - middle Base & Apex Head, Lateral Malleolu Sesamoid bone - grows within the tendon; protects the knee when kneeling Bones of the middle foot Smaller of the lower leg bones; Lateral bone 5 in total; named I-V from medial (big) to lateral (baby) 7 in total; Only need to know Talus and Calcaneus the "thigh"; Longest, strongest, and heaviest bone of the body; At an angle Femur, Patella, Tibia, Fibula, Tarsals, Metatarsals, Phalanges Head, Greater Trochanter, Lesser Trochanter, Linea Aspera, Medial Condyle, Lateral Condyle, Patellar Surface Bones of the back foot Medial Condyle, Lateral Condyle, Medial Malleolus, Fibular Notch 1 Posterior Cruciate Ligament (PCL) 2 Medial Collateral Ligament (MCL) 3 Anterior Cruciate Ligament (ACL) 4 Collateral Ligaments 5 Knee 6 menisci 7 patellar ligament 8 quadricep tendon 9 Cruciate Ligaments 10 Lateral Collateral Ligament (LCL) joint of femur, patella, tibia, fibula anterior, behind patella, crosses in front of PCL Stabilize the sides of the joint; LCL & MCL Between lateral femur and fibula; Prevents hyperadduction (keeping it from moving too far medially) from patella to the tibial tuberosity (below knee) stabilize the front and back of the tibiofemoral joint; ACL & PCL posterior, popliteal region Between medial femur and tibia; Prevents hyperabduction (keeping it from moving too far laterally) fibrocartilage pads between the femoral and tibial condyles from muscle to the patella (above knee)