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Pgs. 220-229 For Student Use Only
<ul><li>Avian (Bird) Anatomy: </li></ul><ul><ul><li>Birds have a lightweight skeleton </li></ul></ul><ul><ul><ul><li>Stron...
<ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Bones: </li></ul></ul><ul><ul><ul><li>Humerus- short upper wing bone </...
<ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Muscles: </li></ul></ul><ul><ul><ul><li>Pectorals compose 33% of weight...
<ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Heart </li></ul></ul><ul><ul><ul><li>Bird’s hearts are very strong </li...
<ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Respiratory System: </li></ul></ul><ul><ul><ul><li>Birds fly at high al...
<ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Respiratory System: </li></ul></ul><ul><ul><ul><li>Air enters through t...
<ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Digestion: </li></ul></ul><ul><ul><ul><li>Birds eat OFTEN(but not much ...
<ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Senses: </li></ul></ul><ul><ul><ul><li>Bird’s have the best eyesight </...
<ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Senses: </li></ul></ul><ul><ul><ul><li>Smell: most birds do not smell w...
 
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8th Grade Chapter 6 Lesson 1

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Transcript of "8th Grade Chapter 6 Lesson 1"

  1. 1. Pgs. 220-229 For Student Use Only
  2. 2. <ul><li>Avian (Bird) Anatomy: </li></ul><ul><ul><li>Birds have a lightweight skeleton </li></ul></ul><ul><ul><ul><li>Strong, hollow bones </li></ul></ul></ul><ul><ul><ul><li>Strong sternums (breastbones) which allow for wing muscles to attach </li></ul></ul></ul><ul><ul><ul><li>Have toothless bills make of keratin (think our fingernails) </li></ul></ul></ul><ul><ul><ul><li>Thin, flat headbones </li></ul></ul></ul>
  3. 3. <ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Bones: </li></ul></ul><ul><ul><ul><li>Humerus- short upper wing bone </li></ul></ul></ul><ul><ul><ul><li>Radius and ulna- long forearm (forewing) </li></ul></ul></ul><ul><ul><ul><li>Alula- retractable group of feathers on the front of the wing </li></ul></ul></ul><ul><ul><li>Muscles: </li></ul></ul><ul><ul><ul><li>We have no arm strength compared to a bird </li></ul></ul></ul><ul><ul><ul><li>Pectoral muscles are very strong in the chest </li></ul></ul></ul>
  4. 4. <ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Muscles: </li></ul></ul><ul><ul><ul><li>Pectorals compose 33% of weight </li></ul></ul></ul><ul><ul><ul><li>Pectorals raise and lower wings </li></ul></ul></ul><ul><ul><ul><ul><li>Pectoralis Major- pulls wing down </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Pectoralis minor- pulls wing up </li></ul></ul></ul></ul><ul><ul><ul><ul><li>This pectorial arrangement gives the birds center of gravity low </li></ul></ul></ul></ul><ul><ul><ul><li>Center of gravity- gives birds stability in flight </li></ul></ul></ul>
  5. 5. <ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Heart </li></ul></ul><ul><ul><ul><li>Bird’s hearts are very strong </li></ul></ul></ul><ul><ul><ul><ul><li>4 chambers </li></ul></ul></ul></ul><ul><ul><ul><ul><li>2 right and 2 left chambers </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Right side- low oxygen blood to heart </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Left side- high oxygen blood to muscles </li></ul></ul></ul></ul><ul><ul><ul><li>Arteries are as large as the aorta </li></ul></ul></ul><ul><ul><ul><li>Blood returns to heart through veins </li></ul></ul></ul>
  6. 6. <ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Respiratory System: </li></ul></ul><ul><ul><ul><li>Birds fly at high altitudes and need to get the most oxygen possible </li></ul></ul></ul><ul><ul><ul><li>Birds do not have a diaphragm </li></ul></ul></ul><ul><ul><ul><ul><li>Air is pumped into the lungs by the movement of the thoracic cavity </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Lungs have air capillaries which allow air to flow through </li></ul></ul></ul></ul>
  7. 7. <ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Respiratory System: </li></ul></ul><ul><ul><ul><li>Air enters through the trachea </li></ul></ul></ul><ul><ul><ul><li>Passes through the lungs and into the air sacs </li></ul></ul></ul><ul><ul><ul><li>As bird exhales air flows forward </li></ul></ul></ul><ul><ul><ul><li>Air is exchanged </li></ul></ul></ul><ul><ul><ul><li>Stale air is exchanged </li></ul></ul></ul><ul><ul><ul><li>Birds get the most air because air goes through twice </li></ul></ul></ul>
  8. 8. <ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Digestion: </li></ul></ul><ul><ul><ul><li>Birds eat OFTEN(but not much at a time) </li></ul></ul></ul><ul><ul><ul><li>Have sack in esophagus called a crop </li></ul></ul></ul><ul><ul><ul><ul><li>Crop- stores and moistens food and constantly releases it </li></ul></ul></ul></ul><ul><ul><ul><li>Birds digest food quickly </li></ul></ul></ul><ul><ul><ul><ul><li>Gizzard- grinds food and breaks it down </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Intestines- digests food </li></ul></ul></ul></ul><ul><ul><ul><li>Birds excrete food quickly </li></ul></ul></ul>
  9. 9. <ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Senses: </li></ul></ul><ul><ul><ul><li>Bird’s have the best eyesight </li></ul></ul></ul><ul><ul><ul><ul><li>Birds have flexible necks because they cannot move HUGE eyes </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Monocular vision- each eye sees differently </li></ul></ul></ul></ul><ul><ul><ul><li>Birds of prey </li></ul></ul></ul><ul><ul><ul><ul><li>Binocular vision- provides narrower vision and lets birds see depth </li></ul></ul></ul></ul><ul><ul><ul><li>Hearing </li></ul></ul></ul><ul><ul><ul><ul><li>Most birds have very sharp hearing </li></ul></ul></ul></ul>
  10. 10. <ul><li>Avian (Bird) Anatomy </li></ul><ul><ul><li>Senses: </li></ul></ul><ul><ul><ul><li>Smell: most birds do not smell well </li></ul></ul></ul>

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