BC 3500000 c.1

From Protoball
(Difference between revisions)
Jump to: navigation, search
m (Larry moved page -2500000 c.1 to -3500000 c.1)
Line 9: Line 9:
 
|Text=<p>Ever try to throw a ball, even a non-breaking pitch,&nbsp;without using your thumb?</p>
 
|Text=<p>Ever try to throw a ball, even a non-breaking pitch,&nbsp;without using your thumb?</p>
 
<p>"The carpometacarpal joint of <em>Australopithecus afarensis</em> would have allowed he range of thumb movement necessary for both key grips used in baseball."</p>
 
<p>"The carpometacarpal joint of <em>Australopithecus afarensis</em> would have allowed he range of thumb movement necessary for both key grips used in baseball."</p>
<p>This extinct hominid (think Lucy), thought to be as close to <em>Homo sapiens </em>as any species then alive, lived in eastern Africa.&nbsp; Their hands weren't adapted to throwing curves, but their thumbs had evolved in that general direction.</p>
+
<p>This extinct hominid (think Lucy), thought to be as close to <em>Homo sapiens </em>as any species then alive, lived in eastern Africa.&nbsp; Their hands weren't yet adapted to throwing, but their thumbs had evolved in that general direction.</p>
 
<p>&nbsp;</p>
 
<p>&nbsp;</p>
|Sources=<p><a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064</a></p>
+
|Sources=<p style="margin: 0in 0in 0pt;">&nbsp;</p>
 +
<p><a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064</a></p>
 
|Comment=<p>Four of our metacarpal bones are aligned in the back of our hands. This fifth is&nbsp;between our wrist and&nbsp;or thumb knuckle.&nbsp;</p>
 
|Comment=<p>Four of our metacarpal bones are aligned in the back of our hands. This fifth is&nbsp;between our wrist and&nbsp;or thumb knuckle.&nbsp;</p>
 
|Submitted by=Joe Gray
 
|Submitted by=Joe Gray

Revision as of 21:27, 5 September 2014

Chronologies
Scroll.png

Prominent Milestones

Misc BB Firsts
Add a Misc BB First

About the Chronology

Add a Chronology Entry
Open Queries
Open Numbers
Most Aged

The Thumb Comes into Play

Salience Noteworthy
City/State/Country: Eastern Africa
Immediacy of Report Retrospective
Text

Ever try to throw a ball, even a non-breaking pitch, without using your thumb?

"The carpometacarpal joint of Australopithecus afarensis would have allowed he range of thumb movement necessary for both key grips used in baseball."

This extinct hominid (think Lucy), thought to be as close to Homo sapiens as any species then alive, lived in eastern Africa.  Their hands weren't yet adapted to throwing, but their thumbs had evolved in that general direction.

 

Sources

 

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064

Comment

Four of our metacarpal bones are aligned in the back of our hands. This fifth is between our wrist and or thumb knuckle. 

Edit with form to add a comment
Query Edit with form to add a query
Submitted by Joe Gray
Submission Note Email of April 1, 2014
Has Supplemental Text Yes



Comments


You are not allowed to post comments.


Supplemental Text

This NIH paper continues, "by 3.2 millions years ago. Australopithecus aferensis . . . "wrist extension comparable to humans would have aided throwing efficiency.  A styloid process on the third metacarpal, appearing for the first time, would have protected against hyperextension from throwing, and the capacity to rotate the second and fifth metacarpals during flexion would have improved the throwing grip."

Personal tools
Namespaces

Variants
Actions
Navigation
Project
Toolbox