Flashcards in Anatomy- Embryology Deck (42)
What days of the menstrual cycle form the menstrual phase?
The secretory or Luteal phase occurs on what days of the menstrual cycle?
The proliferative or follicular phase occurs what days of the menstrual cycle?
What hormone is released to promote development of the follicle?
What causes a surge in LH?
What is a zygote?
Diploid cells resulting from union of sperm and ocum
What structure consists of 12-15 blastomeres?
What contains a fluid-filled cavity that separates the blastomere into two parts?
How soon after fertilization does implantation in the endometrial epithelium of the uterus take place?
What forms the wall of the gestational or chorionic sac?
What forms the floor of the amniotic cavity?
What forms the roof of the exocoelomic cavity?
What is the process of bilaminar embryonic disc development into trilaminar embryonic disc called?
What are the three trilaminar layers called?
Ectoderm, Mesoderm, Endoderm
What germ layer forms epithelial lining of the respiratory tract?
What germ layer forms smooth muscle and smooth muscle coat?
What layer forms the blood cells?
What germ layer forms the bone marrow?
What germ layer forms the central and peripheral nervous system?
What germ layer forms connective tissue?
What germ layer forms the CV system?
What germ layer forms the epidermis?
What germ layer forms the excretory organs?
What germ layer forms the glands opening into the GI tract?
What germ layer forms the glandular cells of the liver and pancreas?
What germ layer forms the GI tract lining?
What germ layer forms the reproductive organs?
What germ layer forms the retina of the eye?
What germ layer forms the skeleton?
What germ layer forms the striated muscle?
What germ layer forms the vessels?
The embryonic foramen oval becomes what structure after birth?
The embryonic ductus arteriosus becomes what structure after birth?
The embryonic ductus venous becomes what structure after birth?
The embryonic umbilical vein becomes what after birth?
The embryonic umbilical arteries become what after birth?
What fetal organs are developed at 4 weeks gestation?
heart, forebrain, upper and lower limbs, ears, lens of the eye
At what stage does the external auditory canal develop?
At what stage do the digits and external genitalia develop?
At what stage do the intestines develop?
At what stage does the ossification of bone begin?