Embryo past paper 3

Primary ossification centers are present in the long bones and skull by the:

• 4th month

• 8th month

• 10th month

• 12th month

• 6th month

Which is NOT a characteristic of Turner's syndrome?

• 45, X karyotype

• Flat(?) breasts

• Skeletal deformities

• Tall stature

• Heart defects.

Gonadal dysgenesis is a characteristic of:

• Down syndrome

• Prader-willi syndrome

• Turner syndrome

• Trisomy 18

• Angelman syndrome

Tiredness, weight gain and intolerance to cold are signs of:

• Graves disease

• Hyperthyroidism

• Hypoparathyroidism

• Hypothyroidism

• Addison's disease

Main morphogen of embryogenesis

• WNT

• FGF

• NODAL

• SHH

Juxtacrine signaling is by:

• FGF

• Indian Hedgehog

• TGF-B

• WNT

• Notch

Melatonin:

• Is produced by pituicytes

• Regulates catecholamines production

• Is housed in corpora amylacea

• Is synthesized from tryptophan

• Is released almost exclusively all day

Human chorionic gonadotropin is produced by:

• Granulosa lutein cells

• Trophoblast cells

• Primary oocyte

Basophils of adenohypophysis produce:

• Oxytocin

• Prolactin

• POMC

• Somatotropin

• GnRH

Neurohypophysis

• ACTH

• Calcitonin

• ADH

• Somatostatin