Class Slides Set
Download
1 / 55

Set 16A - PowerPoint PPT Presentation


  • 104 Views
  • Uploaded on

Class Slides Set 16A The Skull. Many changes take place in the skull . . . The skull . . . the “occipital condyles” have moved forward to an intermediary position . . . The skull . . . occipital condyles = the hinges on which the skull articulates with the spine. The skull . . .

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Set 16A' - Albert_Lan


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Class Slides Set16A

The Skull



The skull
The skull . . .

the “occipital condyles” have moved forward to an intermediary position . . .


The skull1
The skull . . .

occipital condyles =

the hinges on which the skull articulates with the spine


The skull2
The skull . . .

foramen magnum =

the opening through which the spinal cord passes from the “cranium”


The skull3
The skull . . .

the “foramen magnum” has also moved forward and downward . . .


Position of the foramen magnum in

(a) a human and (b) a chimpanzee.

Understanding Physical Anthropology and Archaeology, 9th ed., p. 203


The skull4
The skull . . .

cranium =

the skull without

the lower jaw


The skull5
The skull . . .

the lower jaw =

mandible


Modern human cranium.

Understanding Physical Anthropology and Archaeology, 9th ed., p. 432


The skull6
The skull . . .

the eyes are placed at the front of the head and operate together . . .

  • this results in stereoscopic vision and

    3-D depth perception


Overlapping visual fields (binocular vision) in primates

Understanding Physical Anthropology and Archaeology, 9th ed., p. 115


The skull of a gibbon (left) compared to that of a red wolf (right)

Understanding Physical Anthropology and Archaeology, 9th ed., p. 116


The skull7
The skull . . . (right)

diurnal primates also have color perception

  • diurnal primates are those active during the day, as are apes, monkeys, and humans . . .


The skull8
The skull . . . (right)

some adult male apes have a sharp crest along the top of the skull – “sagittal crest”


The skull9
The skull . . . (right)

heavy chewing and neck muscles attach to the sagittal crest


Satittal crests and temporal muscle orientations. (right)

Hominid compared to pongid.

(Line of greatest muscle force is shown in red.)

Understanding Physical Anthropology and Archaeology, 8th ed., p. 245


The “black skull,” WT 17000 (right)

Australopithecus aethiopicus

Understanding Physical Anthropology and Archaeology, 8th ed., p. 237


The skull10
The skull . . . (right)

“sagittal ridge” – a smaller slightly raised ridge running down the center of the skull

(aka “sagittal keel”)


Homo erectus (right)

Understanding Physical Anthropology and Archaeology, 9th ed., p. 227


The skull11
The skull . . . (right)

most apes have a “supraorbital ridge” over the eyes


The skull12
The skull . . . (right)

supraorbital ridge =

a marked bulge of bone across the region over the eyes


Satittal crests and temporal muscle orientations. (right)

Hominid compared to pongid.

(Line of greatest muscle force is shown in red.)

Understanding Physical Anthropology and Archaeology, 8th ed., p. 245


The skull13
The skull . . . (right)

modern humans have cranial base flexure

(basicranium) (bend)


Modern human cranium. (right)

Understanding Physical Anthropology and Archaeology, 9th ed., p. 432


The skull14
The skull . . . (right)

flexure in the base of the skull (the basicranium)

seems to relate to

a low larynx . . .


Larynx / Pharynx (right)

Humankind Emerging, 7th ed., p. 377


The skull15
The skull . . . (right)

larynx –

the voice box

(which contains the vocal cords)


The skull16
The skull . . . (right)

and a low larynx is associated with a longer pharynx . . .


The skull17
The skull . . . (right)

pharynx –

the throat above the larynx


Larynx / Pharynx (right)

Humankind Emerging, 7th ed., p. 377


Larynx / Pharynx (right)

Humankind Emerging, 7th ed., p. 377


The skull18
The skull . . . (right)

and a longer pharynx is a feature associated with human speech


The skull19
The skull . . . (right)

noses are elevated in humans, and are separated by the septum into two chambers


The skull20
The skull . . . (right)

human upper lips are relatively short, and are never as thin as apes’ lips


Continue on to (right)Set # 16B

Next: Brains


End of (right)Class Slides Set # 16A

Continue on to Set # 16B


ad