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Chapter 7 4 Skeletal System Assignment Sheets

Presentation on theme: "The Skeletal System Chapter 6."— Presentation transcript:

1 The Skeletal SystemChapter 6

2 Structure and Function of the Skeletal System
Lesson 1

3 Do Now Read I.C.E “Broken Bones” Answer:
1.  List and describe 3 types of fracture.2. When should fracture be suspected?3. Describe the 4 steps of bone repair

4 Functions of the Skeleton
SupportProtectionProduce blood cells in the red marrowAll fetal bones have red marrow, only certain adult bones have red marrowStore minerals and fatCa, P, yellow marrow)Movement

5 Types of Bones Long: longer than wide Short: cube Flat
Irregular: round

6 Long Bones Periosteum Epiphysis: expanded portions at ends of the bone
Continuous with ligaments and tendonsConnective tissue coveringProtectionBlood vesselsEpiphysis: expanded portions at ends of the boneDiaphysis: between epiphysesMedullary cavityInside shaft (diaphysis)Stores yellow marrow (fat)Articular cartilage: hyaline where bones meet at a joint

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8 In class assignmentExercise 5.2 worksheet

9 HomeworkText pg “Study Questions” # 1-5

10 Bone CompositionLesson 2

11 Do Now What is an example of a short bone? A flat bone?
Fill in the blank:At both ends of a long bone is an expanded portion called an ____________; the portion between them is called the _______________.

12 Red Bone Marrow Found in long bones Site of hematopoiesis: red
blood cell (RBC) formationLocation:SkullRibsSternumVertebraeEnds of long bones

13 Compact/Cortical Bone
Dense, outer surface of the boneOsteocytes: bone cellsCanaliculi: bring O2 and nutrients to osteocytesCentral canalContains blood vessels and nervesConnect osteocytes

14 Spongy BoneCancellousLighterCompactStrongCan withstand stress

15 Bone Growth Osteoprogenitor: unspecialized cells
Osteoblasts: Build/form bonesOsteocytes: mature bone cellsOsteoclastsFound in red bone marrowBreak down bone to be reabsorbed into the bloodstreamBone Growth

16 Ossification Formation of bone
Intramembranous: bone develops between fibrous connective tissueEx: skullEndochrondral: cartilage breaks down and lays down spongy bone which thickens and becomes compactEpiphyseal plateband of cartilage between primary and secondary ossification sitesRate of growth is controlled by hormonesWhen the plates close growth stops

17 In class assignmentLong bone worksheet

18 CraniumLesson 3

19 Do Now Take out bone structure worksheet
Chapter 21 Study guide worksheet

20 Axial Appendicular Cranium (head) Vertebrae (spinal column)
Thoracic bones (ribs)Upper limbsPelvis (hip bone)Lower limbs

21 Cranium Immovable joints 6 bones
1 frontal2 parietal1 Occipital2 temporalNewborns have fontanels which are not fused

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23 Frontal: forehead, nose, eyesockets
Parietal: sides of headOccipital: posterior of skullForamen magnum: hole for spinal cordOcciptal condyle: rounded on sides of foramen magnumAttaches to c1Temporal: inferior to parietal

24 Temporal External acoustic meatus: ear canal
Mandibular fossa: meets jawMastoid process: attaches to neck musclesStyloid process: attaches tongue and larynxZygomatic process: cheekboneSphenoid bone: floor of cranium near eyes, butterfly shapeSella turcica: pituitary gland depressionEthmoid bone: anterior to sphenoid, floor of cranium, forms nasal cavityCrista galli: triangle attachment for brain membranesCribriform plate: holes for nerves and nose sensorsPerpendicular plate: forms superior nasal septumSuperior middle nasal conchae: increases nasal cavity, attaches nasal mucous membranes

25 In class assignmentLabeling diagrams

26 ParietalFrontalNasalCoronal StructureSquamous StructureSphenoidSphenoidTemporalLacrimalZygomaticethmoidNasalVomerMaxillaMandible

27 Coronal StructureParietalFrontalSquamous StructureTemporalSphenoidLambdoidal StructureethmoidLacrimalOccipitalAccoustic MeatusNasalZygomaticMastoid ProcessMaxillaZygomatic ArchStyloid ProcessMandibleZygomatic

28 HomeworkText pg. 126 “Study Questions” # 6

29 Facial BonesLesson 4

30 Do NowVideo: The SkullPoint out the following bones/sutures on the skeleton:Coronal sutureTemporal boneFrontal boneLacrimal boneOccipital boneZygomatic archSphenoid boneMandible/MaxillaParietal bone

31 Facial Bones 2 Maxillae: upper jaw Vomer bone: 2 Zygomatic bones:
Palantine process: roof of mouthAlveolar process: tooth sockets2 Zygomatic bones:CheekbonesZygomatic arch2 Lacrimal bones:Between the eyes/noseHoles for tear ducts2 Nasal Bones:Bridge of noseCartilageVomer bone:inferior position of nasal septumJoins ethmoid bone and perpendicular plate2 Inferior nasal conchae:Lateral walls of nasal cavityMandible: lower jaw/chinMandibular condyle: attaches to temporal boneCoronoid process: chewing muscle attachment

32 Hyoid Bone Superior to larynx Does not articulate with any other bone
SuspendedAnchors tongue and swallowing muscles

33 In class assignmentSkull labeling diagrams page 13 & 14 of packet

Он превозносил достоинства «Цифровой крепости» по электронной почте, которую направлял на свой собственный адрес. Он писал письма, отправлял их анонимному провайдеру, а несколько часов спустя этот провайдер присылал эти письма ему самому. Теперь, подумала Сьюзан, все встало на свои места. Танкадо хотел, чтобы Стратмор отследил и прочитал его электронную почту. Он создал для себя воображаемый страховой полис, не доверив свой ключ ни единой душе.