Lab 5 Checklist Flashcards
Coccyx
- Last vertebrae (aka Tailbone)
- 3-5 fused vertebrae (usually 4)
Sacrum
- 5 fused vertebrae (above coccyx)
- Articulates with the allium (appendicular skeleton)
- Articulates with 5th lumbar vertebra (L5)
Lumbar Vertebrae
- 5 vertebrae
- Support body weight
- ALL have large bodies and rectangular spinous processes
Body (lumbar)
- Large kidney shape
- Wider from side to side than from front to back
- Slightly thicker in front than back
- Slightly concave
Lamina (lumbar)
- Thin, bony plate
- Shields or protects access to the spinal canal
Pedicle (lumbar)
- Connects the lamina to the vertebral body
- Are very strong
- Directed backwards from the upper part of the vertebral body
Spinous Process (lumbar)
- Blunt and rectangular (for the attachment of strong lumbar muscles)
- Projects backward and downward (as do all)
Transverse Process (lumbar)
- Long and slender
- Change in morphology from L1-L3 to L4-L5
Vertebral Foramen (lumbar)
- Triangular hole within the arch
- Larger than that of thoracic, smaller than that of cervical
Os Coxae
- Hip bone (one side of pelvic girdle)
- Consists of allium, ischium and pubis
Acetabulum
- Joint in pelvic girdle
- Articulates with head of femur
- All 3 bones of Os Coxa join here
Illiac Crest
- Is the Illium’s superior border
Illium
- Os coxa
- Articulates with sacrum
- Largest of 3 bones that make up the pelvis
Ischial Tuberosity
- Lower part of pelvis
- aka Sit bones (bony butt)
Ischium
- Paired bone of os coxa
- ^Most inferior part
- Forms lower and back part of hip bone
- Articulates with illium and pubis
Obturator Foramen
- Large opening in the Os Coxa (hipbone) between the pubis and the ischium
Pubis
- 1 of 3 bones of pelvic bone
- Most forward-facing bone of pelvic bone
- Left and right joined by pubic symphysis
Pelvic Brim (inlet)
- Pelvic Girdle
- Top of cylinder; view from above
Pelvic Outlet
- Pelvic Girdle
- Bottom of cylinder; view from underneath
Pubic Arch
- Pelvic Girdle
- Anterior triangle of the pelvic outlet
Pubic Symphysis
- Cartilaginous Joint that attaches left and right pelvic bone
- Helps pelvis absorb some of the weight from the upper body as it travels to the lower body
- Amphiathrotic; allows expansion during childbirth
Sacroiliac Joint
- Pelvic Girdle
- Joint between Sacrum + Illium
- Plane/gliding synovial joint (flat surface)
Sacrum
- 5 fused vertebrae in Pelvic Girdle
- Articulates with illium and 5th lumbar vertebra
Femur
- Long bone of the thighs/upper hind limb
- Left vs right: Lateral/medial condyles (posterior) and Head (medial)
- Ball & socket joint with acetabulum (hip)
- Distally, articulates with condyles of tibia
Tibia
- Medial bone of the shin
- Larger and stronger than Fibula
- aka Shinbone
Fibula
- Lateral bone of the shin
- Smaller than Tibia
Metatarsals
- 5 within the foot (sole)
- Connect ankle to toes
- Help you balance when you stand and walk
Phalanges (toes)
- 14 digits
- aka Toes
Tarsals
- There are 7
- 2 parts: Talus (big projection on top) and Calcaneus
- NOT long bones
Greater Trochanter
- Large, irregular eminence of the Femur
- Attachement site for gluteus medius & minimus, piriformis, obturator externus & internus
Lateral Condyle
- 1 of 2 projections on the lower extremity of femur
- More prominent and broader than the medial condyle
- Articulates with proximal part of tibia (tibial lateral condyle)
Lateral Epicondyle
- On distal end of Femur
- Attachment site for fibular collateral ligament of the knee-joint
Lesser Trochanter
- On proximal end of Femur
- Medial to Greater Trochanter
- Attachment for Illopsoas Muscle
Medial Condyle (femur)
- Smaller 1 of 2 projections on the lower extremity of femur
- Articulates with proximal part of tibia (tibial medial condyle)
Medial Epicondyle
- Bony protrusion on distal end of Femur
- Provides attachment for Adductor Magnus muscle (tendon) and Tibial Collateral ligament
Lateral Condyle (tibia)
- Lateral portion of the proximal extremity of tibia
- Rests above the head of the fibula
- Articulates with corresponding part on femur
Medial Condyle (tibia)
- Medial portion of the proximal extremity of tibia
- Articulates with corresponding part on femur
Medial Malleolus
- Bony bump on inside of ankle
- Attachment site for Deltoid Ligament
- “Hook” on distal end of tibia
Tibial Tuberosity
- “Bump” on anterior side of of tibia
- Just below the lateral and medial tibial condyles
- Attachment site for patellar ligament
- Articulates with talus
Head (fibula)
- Slanted shape
- Articulates with lateral condyle of tibia
Lateral Malleolus
- Pointy, distal end of fibula
- Bump on outside of ankle
- Articulates with talus
Talus
- Large “ankle” bone
- Articulates with tibia and calcaneus bone
Calcaneus
- aka Heel Bone
- Articulates with cuboid bone (foot), talus (ankle)
- Attachment site for Achilles Tendon
Adductor Longus
- Large, fan-shaped muscle
- On medial, anterior aspect of thigh
- Innervated by L2-L4 (obturator nerve)
- Origin; Pubis
- Insert; Femur
Adductor Magnus
- Large, triangular muscle
- On medial, posterior aspect of thigh
- Attaches to inferior ramus of pubis, ramus of ischium and ischial tuberosity
- Origin; Pubis
- Insert; Femur
Gracilis
- Directly medial to adductor Magnus (in between adductors)
- Long & thin muscle
- Originates on ischiopubic ramus
- Joins with sartorial and semitendinosus muscle tendons (= pes anserine)
- Then inserts on Tibia (medial to tibial tuberosity)
Iliopsoas
- Psoas Major + Ilacus (=iliopsoas)
- Deep muscle group
- Anatomically connects the Spine to Lower Limbs
- Is the primary hip flexor
Iliacus
- Part of Iliopsoas
- Is somewhat of a cavity at the top
- Belongs to inner hip muscles
- Flexor muscle
Psoas Major
- Part of Iliopsoas
- At the very top; runs from lumbar spine through the groin on either side
- Belongs to inner hip muscles
- Flexor muscle
Pectineus
- Flat quadrangular muscle (small & anterior)
- In the upper portion of the thigh
- Thigh Adductor muscle; aids balance and alignment
- Origin; Pubis (Pectineal line)
- Insertion; Femur
Quadriceps Fermoris
- Large group of muscles at the Front of the thigh (quads)
- Includes; rectus femoris, vests medialis, vastus lateralis and vastus intermedius
Rectus Femoris
- Part of quadriceps fermoris
- Runs down the middle (from anterior view)
- Originates; iliac spine (illium)
- Inserts; tibial tuberosity (via patellar ligament) and patella
Vastus Lateralis
- Part of quadriceps fermoris
- Lateral to rectus femoris
- Originates; Greater trochanter of Femur
- Inserts; tibial tuberosity (via patellar ligament), patella and lateral condyle of tibia
Vastus Medialis
- Part of quadriceps fermoris
- Medial to rectus femoris
- Originates; femur
- Inserts; tibial tuberosity (via patellar ligament), patella and lateral condyle of tibia
Sartorius
- Thin, long, superficial muscle
- Runs diagonally on anterior aspect of thigh (over hip and knee joints)
- Origin; Iliac Spine (illium)
- Inserts; Tibia (tibial shaft)
Tensor Fasciae Latae
- Found on proximal anterolateral thigh
- Between the superficial & deep fibres of the iliotibial (IT) band
- Ends before the grater trochanter of the femur
- Originates; anterior iliac crest & iliac spine
- Inserts; lateral condyle of tibia
Gluteus Maximus
- aka Butt
- Main extensor muscle of the hip
- Largest and outermost of the three gluteal muscles
Gluteus Medius
- Proximal to Gluteus Maximus
- Anterior part internally Rotates thigh
- Contraction of the whole muscle Abducts the thigh
Hamstrings
- Tendons at the back of the thighs
- Attach the large thigh muscle to the bone
- Includes; semitendinosus, semimembranous, biceps femoris
- ALL attach between the ischial tuberosity (pelvis) and bones of the leg
Biceps Femoris
- Long hamstring muscle
- Lateral to Semitendionsus
- Allows movement at hip and knee joints
Semimembranosus
- Skinny hamstring muscle
- Medial to Semitendionsus (most medial of 3)
- Has a flat tendon of origin
- Extensor of hip joint
- Flexor of knee joint
Semitendionsus
- Middle, fusiform hamstring muscle
Extensor Digitorium Longus
- Feather-like muscle of the anterior (extensor) compartment of leg
- Lateral part of shin (in front of fibula)
Fibularis (peroneus) Longus
- Superficial muscle in Lateral compartment of leg
- Tilts the sole of foot away from midline of body
- Allows plantar flexion at the ankle
Gastrocnemius
- Main calf muscle
- Flexes knee and foot
- Originates; back of Femur and Patella
- Attaches to Achilles tendon
Soleus
- Wide, flat leg muscle (posterior)
- From just below the knee to the heel
- Lays immediately deep to the Gastrocnemius
Tibialis Anterior
- Originates; lateral surface of tibia
- Inserts; medial cuneiform & 1st metatarsal bones
- Acts to dorsiflex and invert the foot
- Located near the shin (in front of)
Iliofemoral Ligament
- Attaches the anterior inferior iliac spine to intertrochateric crest of femur
- Prevents excess abduction and extension
Ischiofemoral Ligament
- Attaches to posterior surface of acetabular rim and labrum
- Inserts; anterior aspect of femur
- Prevents excess extension & limits internal rotation
Pubofermoral Ligament
- Triangular shaped ligament
- Attaches the Pubis to the Femoral Head
- Prevents hyper extension
Anterior Cruciate Ligament
- ACL runs diagonally in the middle of the knee
- Connects femur to tibia
- Originates at lateral femoral condyle
- Inserts into middle of intercondylar area
Fibular Collateral Ligament
- LCL is on outer side of knee
- Runs from proximal part of fibula to outer side of distal femur
- Attached at lateral condyle of femur (above the popliteus)
Lateral Meniscus
- Horizontal, crescent-shaped band (medial)
- More oval than medial meniscus
- Cartilaginous
- Between the medial tibia and medial femur
- Decrease the amount of stress on the knee joint (shock absorber)
Medial Meniscus
- Horizontal, crescent-shaped band (medial)
- Larger than lateral meniscus
- Cartilaginous
- Between the medial tibia and medial femur
- Decrease the amount of stress on the knee joint (shock absorber)
Patellar Ligament
- Anterior on knee joint
- Distal portion of the quadriceps Femoris (from patella to tibial tuberosity)
- Attaches patella to tibia (large and vertical)
Posterior Cruciate Ligament
- Originates from medial femoral condyle
- Inserts along posterior tibial plateau
- 2 tough bands of fibrous tissue in the back of the knee
- 1 of several ligaments that connect the femur to tibia
Tibial Collateral Ligament
- aka Medial Collateral Ligament (MCL)
- Along the inside of the knee
- Supporting structure connecting tibia to femur
- Surrounds muscles for stability
External Abdominal Oblique
- Outermost abdominal muscles
- Direction of fibres \ //
Rectus Abdominis
- Top layer of abdominal muscles (aka Six-Pack)
- 2 flat and parallel muscles separated by Linear Alba (CT)
- “Rectus” = straight | |