Human Development Weeks 4-8

Question 1

The endoderm gives rise to the

Answer 1

Epethelium

Question 2

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

Answer 2

Paraxial mesoderm

Question 3

All of the urogennital system derives from the

Answer 3

Intermediate Mesoderm

Question 4

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

Answer 4

True, but not entirely reliable

Question 5

By week 3 embryo is slightly

Answer 5

Curved

Question 6

By week 4 it is curved, with

Answer 6

Upper limb buds

Question 7

By week 5 the embryo has

Answer 7

Hand and foot plates

Question 8

By week 6 the embryo has

Answer 8

Fingers, toes, and ears

Question 9

By week 7 the embryo

Answer 9

Has long arms that are bent and webbed fingers

Question 10

By week 8, the embryo

Answer 10

Fingers are free, toes are webbed

Question 11

What is cyclopamine

Answer 11

Corn Lilly that produce cyclops babies

Question 12

What is thalidomide

Answer 12

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

Question 13

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

Answer 13

Left brachiocephalic vein

Question 14

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

Answer 14

Left brachiocephalic vein

Question 15

What structure lies behind the ligamentum anteriorosum?

Answer 15

Left recurrent laryngeal nerve

Question 16

What is the thin walled vessel found behind the esophagus

Answer 16

Thoracic duct