Human Development Weeks 4-8 Flashcards
The endoderm gives rise to the
Epethelium
All axial and appendicular skeletal muscles (except cranium) arise from the
Paraxial mesoderm
All of the urogennital system derives from the
Intermediate Mesoderm
T/F size can be used as an indicator of age
True, but not entirely reliable
By week 3 embryo is slightly
Curved
By week 4 it is curved, with
Upper limb buds
By week 5 the embryo has
Hand and foot plates
By week 6 the embryo has
Fingers, toes, and ears
By week 7 the embryo
Has long arms that are bent and webbed fingers
By week 8, the embryo
Fingers are free, toes are webbed
What is cyclopamine
Corn Lilly that produce cyclops babies
What is thalidomide
Morning sickness pill that caused birth defects. No longer an issue after 42 weeks
A patient has a mid-line tumor of the thymus gland that is impinging a blood vessel. What is most likely the blood vessel?
Left brachiocephalic vein
A patient has an aneurysm of the ascending aorta that was impinging a large vein. What vein is it most likely
Left brachiocephalic vein
What structure lies behind the ligamentum anteriorosum?
Left recurrent laryngeal nerve