Amerindians, Settlers, and the American Revolution

Life of Amerindians: Pueblo, Apaches, Iroquois, and Dakota

Christopher Columbus, seeking a new route from Europe to Asia, arrived in America. Mistaking it for Asia, he called the native inhabitants “Indians.” For years, they were known by this name; only recently have the terms Native Americans or Amerindians become common.

The Pueblo

The Pueblo were the most organized of the Amerindian farming peoples. They lived in villages or towns, often built on cliffs for safety. They crafted clothing and blankets

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Shoulder and Arm Muscles: Origins, Insertions, Actions

Deltoid

Origin: Anterior edge of the collarbone, lateral acromion edge.

Insertion: Deltoid tuberosity.

Action: Horizontal flexion, abduction, extension horizontal.

Supraspinatus

Origin: Supraspinous fossa of the scapula.

Insertion: Superior facet of greater tuberosity.

Action: Produces abduction of the shoulder.

Subscapularis

Origin: Subscapular fossa.

Insertion: Articular capsule of the lesser tuberosity of humerus.

Action: Internal rotation stabilizer.

Infraspinatus

Origin: Infraspinous fossa of the scapula.

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Back Muscles: Origins, Insertions, Actions

Trapezius

  • Origin:
    • Superior: Occipital protuberance, C2-C7, nuchal line.
    • Medial: T1-T4.
    • Inferior: T5-T12.
  • Insertion:
    • Superior: Lateral 1/3 of clavicle.
    • Medial: Acromion process.
    • Inferior: Spine of scapula.
  • Action:
    • Superior: Raises shoulders.
    • Medial: Adduction of scapula.
    • Inferior: Stabilization and depression of scapula.
  • Innervation: Accessory nerve and cervical nerves.

Latissimus Dorsi

  • Origin: Iliac crest, sacral crest, spinous processes of L5-T6, and ribs 10-12.
  • Insertion: Inferior angle of scapula and bicipital
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Key Muscles: Origin, Insertion, Action, and Innervation

NameOriginInsertionActionInnervation
Splenius capitisLigamentum nuchae, SP C7-T4Mastoid process, Occipital boneRotates head to the same side. Extends head/neckPosterior rami of cervical spinal nerves
Splenius cervicisSP T3-T6TP C1-C3Rotates head to the same side. Extends head/neckPosterior rami of cervical spinal nerves
IliocostalisSacrum, ilium, lumbar vertebraeRibs, cervical vertebraeExtends vertebral column; posturePosterior rami of spinal nerves
LongissimusSacrum, ilium, lumbar vertebraeMastoid
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Cell Biology Questions and Answers

Cell Biology Questions

1. What are the 3 principal parts of a cell?
– plasma membrane, cytoplasm, nucleus

2. What are the characteristics/properties of the plasma membrane?
– fluidity, selective permeability, asymmetry

3. If you observed that a cell did not have a centrosome, what could you predict about its capacity for cell division?
– the cell probably would not be able to undergo cell division

4. You would expect a cell with an extensive Golgi apparatus to:
– secrete a lot of proteins

5. Regarding

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