chapter 6. lesson 1 do now i.c.e “broken bones functions of the skeleton support protection...
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Chapter 6
Lesson 1
Do NowI.C.E “Broken Bones
Functions of the SkeletonSupportProtectionProduce blood cells in the red marrow
All fetal bones have red marrow, only certain adult bones have red marrow
Store minerals and fat Ca, P, yellow marrow)
Movement
Types of BonesLong: longer than wideShort: cubeFlat Irregular: round
Long BonesPeriosteum
Continuous with ligaments and tendons Connective tissue covering Protection Blood vessels
Epiphysis: expanded portions at ends of the boneDiaphysis: between epiphysesMedullary cavity
Inside shaft (diaphysis) Stores yellow marrow (fat)
Articular cartilage: hyaline where bones meet at a joint
In class assignmentExercise 5.2 worksheet
HomeworkText pg. 125-126 “Study Questions” # 1-5
Lesson 2
Do NowBone labeling diagram
Red Bone MarrowFound in long bonesSite of hematopoiesis: red blood cell (RBC) formationLocation:
Skull Ribs Sternum Vertebrae Ends of long bones
Compact BoneDENSEOsteons > lamallae > canaliculi > osteocytes
Canaliculi: bring O2 and nutrients to osteocytes
Osteocytes: bone cells
Central canal Contains blood vessels and nerves Connect osteocytes
Spongy BoneCancellous LighterCompactStrongCan withstand stress
What type of stress?
Bone GrowthOsteoprogenitor: unspecialized cellsOsteoblasts: form bonesOsteocytes: mature bone cellsOsteoclasts
Found in red bone marrow Break down bone to be reabsorbed into the
bloodstream
OssificationFormation of boneIntramembranous: bone develops between
fibrous connective tissue Ex: skull
Endochrondral: cartilage breaks down and lays down spongy bone which thickens and becomes compact
Epiphyseal plate band of cartilage between primary and secondary
ossification sites Rate of growth is controlled by hormones When the plates close growth stops
In class assignmentLong bone worksheet
Lesson 3
Do NowChapter 21 Study guide worksheet
Axial AppendicularCranium (head)Vertebrae (spinal
column)Thoracic bones
(ribs)
Upper limbsPelvis (hip bone)Lower limbs
CraniumImmovable joints6 bones
1 frontal 2 parietal 1 Occipital 2 temporal
Newborns have fontanels which are not fused
Frontal: forehead, nose, eyesockets
Parietal: sides of head
Occipital: posterior of skull Foramen magnum: hole for
spinal cord Occiptal condyle: rounded on
sides of foramen magnum Attaches to c1
Temporal: inferior to parietal
Temporal External acoustic
meatus: ear canal Mandibular fossa: meets
jaw Mastoid process: attaches
to neck muscles Styloid process: attaches
tongue and larynx Zygomatic process:
cheekbone Sphenoid bone: floor of
cranium near eyes, butterfly shape
Sella turcica: pituitary gland depression
Ethmoid bone: anterior to sphenoid, floor of cranium, forms nasal cavity
Crista galli: triangle attachment for brain membranes
Cribriform plate: holes for nerves and nose sensors
Perpendicular plate: forms superior nasal septum
Superior middle nasal conchae: increases nasal cavity, attaches nasal mucous membranes
In class assignmentLabeling diagrams
HomeworkText pg. 126 “Study Questions” # 6
Lesson 4
Do NowVideo: The Skull
Facial Bones2 Maxillae: upper jaw
Palantine process: roof of mouth
Alveolar process: tooth sockets
2 Zygomatic bones: Cheekbones Zygomatic arch
2 Lacrimal bones: Between the eyes/nose Holes for tear ducts
2 Nasal Bones: Bridge of nose Cartilage
Vomer bone: inferior position of nasal
septum Joins ethmoid bone and
perpendicular plate2 Inferior nasal conchae:
Lateral walls of nasal cavity
Mandible: lower jaw/chin Mandibular condyle:
attaches to temporal bone Coronoid process:
chewing muscle attachment
Hyoid BoneSuperior to larynxOnly bone in the body that does not articulate
with any other boneSuspended Anchors tongue and swallowing muscles
In class assignmentSkull labeling diagrams
HomeworkTest Items worksheet
Cranium QuizPracticum and Written
Lesson 5
Do NowVideo: The Vertebral Column
Vertebral ColumnProtects spinal cordSkull to pelvis~33 bones
7 cervical (neck) C1: atlas C2: axis
12 thoracic (chest)5 lumbar (low back)5 fused sacral3-5 fused coccyx
(tailbone)
1 curve in the fetusCervical curve forms
3-4 months after birth
Curves provide support
Disorders of the SpineKyphosisLordosisScoliosis
When do these abnormalities occur? Where? What can be don’t to correct?
Intervertebral DisksCartilage disks found between vertebral
bonesPrevent grindingShock absorptionAllow flexion/extension/lateral movements
Herniated DiskSlip or rupture of the
cartilaginous diskCan press on the
spinal nerves and cause pain
Treatment:Repair Removal – vertebrae
are fused together and provide substantially less range of motion
Vertebral StructuresVertebrae are small at
the top of the spineWhy?
Vertebrae are larger at the bottom of the spineWhy?
Foramen: hole for the spinal cord to pass from the brain
In class assignmentVertebrae Worksheet
HomeworkComplete worksheet
Lesson 6
Do NowVideo: The Bony Throrax
Atlas and Axis2 special cervical vertebraeC1 and C2Atlas: supports and balances the head
(nodding)Axis: allows shaking of the head (no)
Odontoid process connects it to the atlas
Rib CageProtective (heart/lungs)Flexible (breathing)12 pairs (24 total)Connect to thoracic
vertebrae“True ribs”: first 7 pairs
which connect to the sternum by costal cartilage
“False ribs”: 5 pairs which do not attach to the sternum
SternumBreastbone3 bones:
1. Manubrium (superior) ribs 1-22. Body (Middle/largest) ribs 3-73. Xiphoid (inferior/smallest) no ribs
- attaches to diaphragm- separates thoracic and
abdominal cavities- site for CPR
In class assignmentThoracic Labeling Diagrams
http://highered.mcgraw-hill.com/classware/ala.do?isbn=0072829532&alaid=ala_733424&showSelfStudyTree=true
HomeworkText pg 126 “Study Questions” # 9
Vertebral Column and Thoracic Quiz
Written and Practical
Lesson 7
Do NowVideo:The Appendicular Skeleton: Upper
Limb
ClavicleCollarboneSlender“s” shapedArticulates with
manubrium and sternum
Weak
ScapulaStructures
Shoulder bladesBroadFlexibleNot connected
SpineAcromion process:
articulates with clavicle Attaches arm and chest
muscles
Coracoid process Attaches arm and chest
muscles
Glenoid cavity Articulates with humerus
HumerusProximal End Distal End
Head: Articulates with glenoid
cavity of scapula
Greater and lesser tubercles:
Attach muscles to move the arm and shoulder
Intertubercular groove: Holds biceps brachii
Deltoid tuberosity: Attaches deltoid
Capitulum: Lateral condyle articulates
with the radial head
Trochlea: Condyle articulates with the
ulna
Coronoid fossa: Depression for ulna during
flexion
Olecranon fossa: Depression for ulna during
extension
RadiusProximal End Distal EndHead:
Articulates with capitulum of humerus and ulna
Radial tuberosity:Attaches
biceps brachii
Ulnar notch:Articulates
with the head of the ulna
Styloid process:Attaches
wrist ligaments
UlnaProximal End Distal EndCoronoid process:
Articulates with the coronoid fossa of the humerus during flexion
Olecranon process: Articulates with the
olecranon process of the humerus during extension
Trochlear notch: Articulates with the
troclear notch of the humerus
Radial notch: Articulates with the head
of the radius
Head: Articulates with the
ulnar notch of the radius
Styloid process: Attaches wrist ligaments
Carpals 8 bones
HamateCapitateTriquetrumTrapeziumScaphoidLunate
Metacarpals5 bones – 1-5 from the
thumbThumb:
1st metacarpal Can touch all fingers
Metacarpal heads are visible when the fist is clenches
PhalangesThumb:
2 bones (proximal, distal)
4 fingers: 3 bones (proximal, medial,
distal)
In class assignmentUpper Limb Labeling Diagrams
http://highered.mcgraw-hill.com/classware/ala.do?isbn=0072829532&alaid=ala_733424&showSelfStudyTree=true
HomeworkText pg. 126”Study Questions” # 10 & 11
Upper Limb QuizWritten and Practical
Lesson 8
Do NowVideo: The Appendicular Skeleton: Lower
Limb (2) Pelvic Girdle
Coxal BonesIllium:IschiumPubisAll 3 meet together at
the acetabulum which articulates with the head of the femur
IlliumFlares outwardIliac crest:
Prominance (hip bones)
Anterior/posterior iliac spine: End points of crest
Greater sciatic notch: Connects to sacrum Blood vessels Sciatic nerve
IschiumIschial tubersity:
What you “sit” on
Ischial spine: Between iliium and
ischium Determines the
size of the pelvis
PubisPubic symphysis:
Joins both pubic bones
Obturator foramen: Hole for blood vessels and nerves
Gender DifferencesFemaleMaleBroaderMore flaredWiderLighterThinner
ThickerHeavierMuscle attachment sites
are larger
In class assignmentPelvic Girdle diagram
HomeworkText pg. 126 “Study Questions” # 12 & 13
Lesson 9
Do NowVideo: The Appendicular Skeleton: Lower
Limb
FemurProximal End Distal EndHead:
articulates with the acetabulum of the coxal bone
Greater/lesser trochanters:Attaches thigh muscles
Linea aspera:Attaches muscles
Medial/lateral epicondyle:Attaches muscles and
ligamentsLateral/medial condyle:
Articulates with the tibiaPatellar surface:
Between condylesAnteriorArticulates with the
patella
PatellaKneecapProtects knee joint
TibiaThickWeight bearingMedial/lateral condyles:
Articulates with the femur
Tibial tuberosity: Attaches to patellar ligaments
Anterior crest: shin
Medial malleolus: Bulge on the inner ankle Articulates with the talus
FibulaSlenderLateral to tibiaArticulates with the tibia below the lateral
condyleLateral malleolus:
Articulates with the talus Outer bulge Stabilizes ankle
Tarsals7 bones per ankleTalus moves freelyJoins with tibia and fibulaCalcaneus (heel)
Metatarsals5 bones per footDistal ends (balls of feet)Form arches
LongitudinalTransverse
Phalanges14 bones per foot1st toe has 2 bones (proximal, distal)4 toes have 3 bones (proximal, medial, distal)
In class assignment
HomeworkText pg. 126 “Study Questions” # 14
Lesson 10
Do Now
JointsClassified by the amount of movement:
1.Synarthrosis - Immovable2.Amphiarthrosis – Slightly Movable3.Diarthrosis - Freely Movable
Classified by StructureFibrous
Fibrous connective tissueBinds bone to boneUsually immovable
CartilaginousFibrocartilage or hyalineBind bonesUsually slightly movable
Synovial Bones do not touchEnclosed in capsuleUsually freely movable
Fibrous (Sutures)Coronal
Between parietal and frontalLamboidal
Between parietal and occipitalSquamosal
Between parietal and temporalSagittal
Between parietalsTooth/socket
CartilaginousRibs
Joined to sternum by costal cartilagePubic symphysis
Expands during pregnancyControlled by hormones
Synovial Joint cavitySynovial membraneSynovial fluidMove freelyStabilized by ligaments and tendonsBones protected by hyaline cartilage and
menisci and bursae
In class assignment
HomeworkText pg. 126 “Study Questions” # 15
Lesson 11
Do Now
Types of Synovial JointsSaddleBall and socketPivotHingeGlidingCondyloid
Saddle Joint Fits complementary Ex: metacarpals
Ball and Socket JointBall fits into cup
shapeWide range of
motionRotationEx: shoulder/hip
Pivot JointOne bone pivots
around anotherEx: proximal ends of
the radius and ulna/ between the atlas and axis
Hinge JointConvex/concaveEx: knee/elbow
Gliding JointFlatSliding or twisting
motionEx: wrist/ankle
Condyloid JointOvalMove in different
planesNo rotationEx between
metacarpals and phalanges
Synovial Joint MovementsAngular Circular Special
Flexion Circumduction Inversion
Extension Rotation Eversion
Adductions Supination Elevation
Abduction Pronation Depression
HomeostasisProtect internal organsAssist all phases of respirationStore and release calciumAssist lymphatic system and immune systemAssist digestionlocomotion
In class assignment
HomeworkText pg. 126 “Study Questions” # 16-18
Lesson 12
Lesson 13
Do NowText pg. 126 “Learning Objectives” # 1-6
HomeworkText pg. 126 “Learning Objectives” # 7-20