Chapter 7 Lesson 7.1     Skeletal system206 bones make up theskeletal systemFunctions 1. Supports and protects 2. Makes ...
MUSCULAR SYSTEMFUNCTION - MOVEMENTMORE THAN 650 MUSCLES INTHE BODYTwo categories: VOLUNTARYAND INVOLUNTARYMUSCLES ALSO...
SKELETAL SYSTEMTwo broad divisions:     1. Axial skeleton•trunk of the body•Includes   a. vertebral column   b. skull   c....
SKELETAL SYSTEMTwo broad divisions:       1. Axial skeleton       Appendicular skeleton –       2.the appendages and their...
Axial skeletonSkull – Cranial bones dividedinto two main parts:    1. CRANIUM LARGEST PART OF THE SKULL IS MADEOF THE CRA...
Axial skeletonSkull – Cranial bones divided into two main parts:       1. CRANIUM   2. FACIAL14 BONESFACE AND JAW
Bones of the Cranium
Parietal
Occipital
Temporal
Sutures - in adults where the bonesof cranium are joined tightlytogether which will absorb shock.Frontanels – tough membra...
Facial Bones
Frontal
MaxillaMakes up central portion of faceWhere upper teeth are attached Maxilla
Mandible•Lower jaw•Lower teeth attach•Moves•Held to skull byligaments•Ligaments are        Mandibleconnective tissuethat h...
Palate – roof of mouth formedby palatine bones andmaxillary bones           Palatine bone        Maxilla
Sinuses – air-filled pockets(hollow spaces in the bone)located within the bones ofthe face and around the nasalcavity.Func...
Hyoid bone – in the upperneck and where muscleslike tongue attach.
Smallest bones of body in the ear andinclude:               Malleus (hammer)               Incus (anvil)               ...
Vertebral ColumnFunction: to protect thespinal cord and supportthe body.Composed of 26 vertebraeor individual bones.
Types of Vertebrae:•7 cervical (head attaches)•12 thoracic (ribs attach)•5 lumbar (support weight)•5 fused sacral – five f...
C1: To blood supply to the head, pituitary gland, scalp, bones of the face, brain inner and middle ear,sympathetic nervous...
Spinal curvature:Spine is “S” shaped with 4curvatures: cervical – convex (forward) thoracic – concave (back) lumbar – c...
Vertebral column is made upof vertebrae stacked uponeach other.
•Between thevertebrae are theintervertebral discmade up of cartilage.•Cartilage – tough,rubbery connectivetissue.•Disk act...
Atlas and axis – first twocervical vertebrae thatsupport head and allowfor sideways movement.
Abnormalities of the curvature ofthe spine:Scoliosis – abnormal sidewayscurve of the spine.Kyphosis – (hunchback) abnorm...
Thoracic cage:Function: protects organs suchas the heart and lungsIncludes:    ribs and sternum
RibsAttach to the thoracicvertebrae in back andmost attach to thesternum in the front bycostal cartilageThere are 12 pai...
Types of Ribs:•True ribs – first sevenpairs that connect tosternum directly by costalcartilage.•False ribs – last five pai...
Types of Ribs:•True ribs•False ribe•Floating ribs – lasttwo pairs of false ribsthat do not attach tosternum directly orind...
Biology Lesson7.1
Biology Lesson7.1
Biology Lesson7.1
Biology Lesson7.1
Upcoming SlideShare
Loading in...5
×

Biology Lesson7.1

134

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
134
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Biology Lesson7.1

  1. 1. Chapter 7 Lesson 7.1 Skeletal system206 bones make up theskeletal systemFunctions 1. Supports and protects 2. Makes red and white blood cells 3. Stores minerals like calcium and phosphorus 4. Aid in movement, muscles attach to bones
  2. 2. MUSCULAR SYSTEMFUNCTION - MOVEMENTMORE THAN 650 MUSCLES INTHE BODYTwo categories: VOLUNTARYAND INVOLUNTARYMUSCLES ALSORESPONSIBLE FOR THE HEARTBEATING AND YOU BREATHING
  3. 3. SKELETAL SYSTEMTwo broad divisions: 1. Axial skeleton•trunk of the body•Includes a. vertebral column b. skull c. thoracic cage (ribs, sternum, and vertebrae), d. hyoid bone (in the neck)
  4. 4. SKELETAL SYSTEMTwo broad divisions: 1. Axial skeleton Appendicular skeleton – 2.the appendages and their girdles(where they attach to the axialskeleton).
  5. 5. Axial skeletonSkull – Cranial bones dividedinto two main parts: 1. CRANIUM LARGEST PART OF THE SKULL IS MADEOF THE CRANIAL BONES HAS 8 BONES THAT ARE JOINEDINCLUDES BONES OF THE BACK OFHEAD, SIDE, AND TOP
  6. 6. Axial skeletonSkull – Cranial bones divided into two main parts: 1. CRANIUM 2. FACIAL14 BONESFACE AND JAW
  7. 7. Bones of the Cranium
  8. 8. Parietal
  9. 9. Occipital
  10. 10. Temporal
  11. 11. Sutures - in adults where the bonesof cranium are joined tightlytogether which will absorb shock.Frontanels – tough membrane inbabies/children where the bones ofcranium are connected which allowsa baby’s brain to grow.
  12. 12. Facial Bones
  13. 13. Frontal
  14. 14. MaxillaMakes up central portion of faceWhere upper teeth are attached Maxilla
  15. 15. Mandible•Lower jaw•Lower teeth attach•Moves•Held to skull byligaments•Ligaments are Mandibleconnective tissuethat hold bones tobones
  16. 16. Palate – roof of mouth formedby palatine bones andmaxillary bones Palatine bone Maxilla
  17. 17. Sinuses – air-filled pockets(hollow spaces in the bone)located within the bones ofthe face and around the nasalcavity.Function:SoundresonationMakes skull
  18. 18. Hyoid bone – in the upperneck and where muscleslike tongue attach.
  19. 19. Smallest bones of body in the ear andinclude: Malleus (hammer) Incus (anvil) Stapes(stirrup) Function: to amplify the sound
  20. 20. Vertebral ColumnFunction: to protect thespinal cord and supportthe body.Composed of 26 vertebraeor individual bones.
  21. 21. Types of Vertebrae:•7 cervical (head attaches)•12 thoracic (ribs attach)•5 lumbar (support weight)•5 fused sacral – five fusedvertebrae• 4 fused coccyx also called thetailbone
  22. 22. C1: To blood supply to the head, pituitary gland, scalp, bones of the face, brain inner and middle ear,sympathetic nervous system, eyes, earsC2: To eyes, optic nerves, auditory nerves, sinuses, mastoid bones, tongue, forehead, heart C3: To cheeks, outer ear, face, bones, teeth, trifacial nerve, lungs C4: To nose, lips, mouth, Eustachian tube, mucus membranes, lungsC5: To vocal cords, neck glands, pharynx C6: To neck muscles, shoulders, tonsils C7: Tothyroid gland, bursa in the shoulders, elbows T1: To arms from the elbows down, including hands, arms, wrists and fingers; esophagus and trachea,heartT2: To heart, including its valves and covering coronary arteries; lungs bronchial tubesT3: To lungs, bronchial tubes, pleura, chest, breast, heart T4: To gallbladder, common duct, heart, lungs, bronchial tubesT5: To liver, solar plexus, circulation (general), heart, esophagus, stomach T6: To stomach, esophagus, peritoneum, liver, duodenumT7: To kidneys, appendix, testes, ovaries, uterus, adrenal cortex, spleen, pancreas, large intestine T8: To spleen, stomach, liver, pancreas, gallbladder, adrenal cortex, small intestine, pyloric valveT9: To adrenal cortex, pancreas, spleen, gallbladder, ovaries, uterus, small intestineT10: To kidneys, appendix, testes, ovaries, uterus, adrenal cortex, spleen, pancreas, large intestine T11: To kidneys, ureters, large intestine, urinary bladder, adrenal medulla, adrenal cortex, uterus,ovaries, ileocecal valveT12: To small intestine, lymph circulation, large intestine, urinary bladder, uterus, kdneys, ileocecal valveL1: To large intesine, inguinal rings, uterusL2: To appendix, abdomen, upper leg, urinary bladder L3: To sex organs, uterus, bladder, knee, prostate, large intestine L4: To prostate gland, muscles of the lower back, sciatic nerve L5: To lower legs, ankles, feet, prostate Sacrum: To hip bones, buttocks, rectum, sex organs, genitalia, urinary bladder, ureter, prostateSacral Plexus: Forms the sciatic as well as other nerves that go to muscles, joints and other structures ofthe legs, knees, ankles, feet and toesCoccyx: To rectum, anus
  23. 23. Spinal curvature:Spine is “S” shaped with 4curvatures: cervical – convex (forward) thoracic – concave (back) lumbar – convex (forward) sacral – concave (back)Curved spine acts as a shockabsorber, and for strength and
  24. 24. Vertebral column is made upof vertebrae stacked uponeach other.
  25. 25. •Between thevertebrae are theintervertebral discmade up of cartilage.•Cartilage – tough,rubbery connectivetissue.•Disk act as shockabsorbers.
  26. 26. Atlas and axis – first twocervical vertebrae thatsupport head and allowfor sideways movement.
  27. 27. Abnormalities of the curvature ofthe spine:Scoliosis – abnormal sidewayscurve of the spine.Kyphosis – (hunchback) abnormalcurve of the thoracic vertebraeLordosis – (swayback) abnormalcurve of the lumbar vertebrae
  28. 28. Thoracic cage:Function: protects organs suchas the heart and lungsIncludes: ribs and sternum
  29. 29. RibsAttach to the thoracicvertebrae in back andmost attach to thesternum in the front bycostal cartilageThere are 12 pairs forboth male and female,but one of best areas forregenerating
  30. 30. Types of Ribs:•True ribs – first sevenpairs that connect tosternum directly by costalcartilage.•False ribs – last five pairthat indirectly attach byjoining the cartilage of the7th rib or don’t attach to thesternum at all.
  31. 31. Types of Ribs:•True ribs•False ribe•Floating ribs – lasttwo pairs of false ribsthat do not attach tosternum directly orindirectly.
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×