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WELCOME TO

A&P I SI!

Week 7 Session 2: March 5th

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ATTENDANCE

Please check in for attendance using the QR code while we are waiting to get started.

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SESSION TIMINGS

WEDNESDAY

MONDAY

5:30 PM to 6:45 PM

BLOC 117

5:30 PM to 6:45 PM

BLOC 117

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SESSION GROUND RULES

  • Collaborate with each other. Discussion helps us learn.
  • Don’t be afraid to shout out a wrong answer!
  • This is a safe space. Don't be afraid to ask questions. Another student may have the same one.
  • You do NOT have to come to SI knowing all of the lecture and lab material. This is a place for us to learn from each other.
  • Please do not record my SI sessions. This is a FERPA violation.

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ANNOUNCEMENTS

  • Spring break is from March 8th to 16th
    • No SI sessions will be held on March 11th and 13th
    • No lectures will be held from March 11th to 15th

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SESSION FORMATTING

01

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WARM-UP

03

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COOL-DOWN

02

MAIN ACTIVITY

Calcium Homeostasis Mechanisms

Bone Growth Hormones

Factors Affecting Bone Growth

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WARM-UP

01

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CHART

COMPARE THE DIFFERENCES IN HOW THE BODY RESPONDS TO VARYING CALCIUM LEVELS.

Calcium Too Low

Calcium Too High

Muscle spasms

Muscle weakness and fatigue

Parathyroid hormone released by parathyroid gland

Calcitonin

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MAIN ACTIVITY

02

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WORKSHEET

Lecture Review:

Factors Affecting Bone Growth

Worksheet Link: https://docs.google.com/document/d/18MNCSmSjwPd2FsXDyg4C4Q-XjCKewpxGWseIrD-3e4c/edit?usp=sharing

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COOL-DOWN

03

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GROUP DISCUSSION

  • Growth hormone = somatotropin
    • Binds with hepatocytes to form IGF-1
    • Secreted by pituitary gland
    • Single polypeptide, ~200 amino acids long
  • IGF-1 = insulin growth factor 1
    • Targets chondrocytes of epiphyseal plate
    • Secreted by liver
    • Works with growth hormone to form growth hormone axis (conceptual axis)
  • Thyroid
    • Brain and bone development (linear bone growth)
    • Permissive hormone that allows other cells to use their full potential
    • Iodine helps thyroid with brain development
    • Made up by tyrosine
  • Gonadal sex hormones (estrogen and testosterone)
    • Causes growth during puberty and closure of epiphyseal plates
    • Estrogen is stimulated before testosterone
      • Estrogen is much stronger in inhibiting bone growth than testosterone

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THANKS FOR COMING!

Please sign into attendance if you have not already.

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Feel free to reach out to me at knp102002@tamu.edu with any questions.