Human Development Weeks 4-8 Flashcards

1
Q

The endoderm gives rise to the

A

Epethelium

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2
Q

All axial and appendicular skeletal muscles (except cranium) arise from the

A

Paraxial mesoderm

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3
Q

All of the urogennital system derives from the

A

Intermediate Mesoderm

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4
Q

T/F size can be used as an indicator of age

A

True, but not entirely reliable

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5
Q

By week 3 embryo is slightly

A

Curved

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6
Q

By week 4 it is curved, with

A

Upper limb buds

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7
Q

By week 5 the embryo has

A

Hand and foot plates

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8
Q

By week 6 the embryo has

A

Fingers, toes, and ears

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9
Q

By week 7 the embryo

A

Has long arms that are bent and webbed fingers

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10
Q

By week 8, the embryo

A

Fingers are free, toes are webbed

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11
Q

What is cyclopamine

A

Corn Lilly that produce cyclops babies

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12
Q

What is thalidomide

A

Morning sickness pill that caused birth defects. No longer an issue after 42 weeks

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13
Q

A patient has a mid-line tumor of the thymus gland that is impinging a blood vessel. What is most likely the blood vessel?

A

Left brachiocephalic vein

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14
Q

A patient has an aneurysm of the ascending aorta that was impinging a large vein. What vein is it most likely

A

Left brachiocephalic vein

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15
Q

What structure lies behind the ligamentum anteriorosum?

A

Left recurrent laryngeal nerve

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16
Q

What is the thin walled vessel found behind the esophagus

A

Thoracic duct