When do primary oocytes begin meiosis I?
What 3 structures pass through the optic canal?
At what time in the course of development is the foetus most susceptible to teratogens?
Do the chromaffin cells of the adrenal medulla arise from neural crest (ectoderm), mesoderm, or endoderm?
What foetal landmark has occurred within week 3 of fertilization?
What is the histologic change in lymph nodes during an extreme cellular immune response?
What is the normal range of frequency of human ear?
What is the function of hair cells?
What makes endolymph?
What is the response to microglia infected with HIV?
The right common cardinal vein and right anterior cardinal vein give rise to what adult heart structure?
CN II passes through what 'hole'?
What are the functions of the lymph node?