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ANAT0001 > Mesoderm > Flashcards

Mesoderm Flashcards

1
Q

How many pairs of somites are produced in a human embryo?

A

42-44

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2
Q

How many cervical pairs of somites are formed in a human embryo?

A

8 pairs

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3
Q

The ventral medial wall of each somite breaks down to form a loose mesenchymal population. What name is given to this population of cells?

A

Sclerotome

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4
Q

Which myotomes form the skeletal muscles of the tongue?

A

Occipital Myotomes

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5
Q

What signalling molecule induces the sclerotome region of somites?

A

SHH

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6
Q

What tissue is formed by endocardial tubes?

A

Endocardium

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7
Q

What is the name of the input chamber of the 4-5 week old heart?

A

Sinus venous

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8
Q

From what tissue do the vitelline veins carry blood?

A

Yolk sac

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9
Q

The primitive heart tube is suspended in the pericardial cavity by what tissue?

A

Dorsal mesocardium

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10
Q

After birth the septum primum and the septum secundum fuse to close what valve?

A

Foramen ovale

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11
Q

In the fetal circuation this vessel allows blood to bypass the pulmonary artery?

A

Ductus arteriosus

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12
Q

Tissues formed by PARAXIAL mesoderm

A
  • Bone + Cartilage (vertebrae & ribs)
  • Connective tissue (skin)
  • Skeletal muscle
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13
Q

Tissues formed by INTERMEDIATE mesoderm

A
  • Kidney, gonad
  • Reproductive tract
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14
Q

Tissues formed by LATERAL PLATE mesoderm

A
  • Bone + Cartilage (limbs)
  • Connective tissue (skin, digestive tract)
  • Blood, heart
  • Smooth muscle
  • Tendons, vusculature
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ANAT0001 (14 decks)

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