TAILIEUCHUNG - Ebook High-yield embryology (5th edition): Part 2

(BQ) Part 2 book "High-yield embryology" presents the following contents: Female reproductive system, male reproductive system, respiratory system, head and neck, nervous system, ear, eye, body cavities, pregnancy, teratology. | Chaptem 9 Female Reproductive System The Indifferent Embryo A. The genotype of the embryo 46 XX or 46 XY is established at fertilization. B. DURING WEEKS 1-6 the embryo remains in a sexually indifferent or undifferentiated stage. This means that genetically female embryos and genetically male embryos are phenotypically indistinguishable. C. DURING WEEK 7 the indifferent embryo begins phenotypic sexual differentiation. D. BY WEEK 12 female or male characteristics of the external genitalia can be recognized. E. BY WEEK 20 phenotypic differentiation is complete. F. Phenotypic sexual differentiation is determined by the Sry gene located on the short arm of the Y chromosome and may result in individuals with a female phenotype an intersex phenotype or a male phenotype. The Sry gene encodes for a protein called testes-determining factor TDF . G. As the indifferent gonad develops into the testes Leydig cells and Sertoli cells differentiate to produce testosterone and Mullerian inhibiting factor MIF respectively. In the presence of TDF testosterone and MIF the indifferent embryo will be directed to the male phenotype. In the absence of TDF testosterone and MIF the indifferent embryo will be directed to the female phenotype. hi Development of the Gonads A. THE OVARY 1. The intermediate mesoderm forms a longitudinal elevation along the dorsal body wall called the urogenital ridge which later forms the gonadal ridge. 2. Primary sex cords develop from the gonadal ridge and incorporate primordial germ cells XX genotype which migrate into the gonad from the wall of the yolk sac. Primary sex cords extend into the medulla and develop into the rete ovarii which eventually degenerates. 3. Secondary sex cords develop and incorporate primordial germ cells as a thin tunica albuginea forms. 4. The secondary sex cords break apart and form isolated cell clusters called primordial follicles which contain primary oocytes surrounded by a layer of simple squamous cells. 67 68 CHAPTER 9 B. .

• Y khoa - Dược
• High yield embryology
• Female reproductive system
• Male reproductive system
• Respiratory system
• Head and neck
• Nervous system
• Lippincott’s illustrated review
• Basic neurophysiology
• The central nervous system
• The peripheral nervous system
• The visceral nervous system
• The spinal cord
• Color atlas and textbook of human anatomy
• Sensory organs
• Cerebro vascular
• Ventricular systems
• Autonomic nervous system
• Central nervous system trauma
• Neuropathology of vascular disease
• Human prion diseases
• Pathology of degenerative diseases
• The nervous system
• Human anatomy
• The brain and cranial nerves
• The endocrine system
• The respiratory system
• The lymphoid system
• Lecture Biology
• Human physiology
• The human body
• Nervous tissue
• Pathology competencies
• Organ system pathology
• Central nervous system
• Human polyomavirus 2
• Tumor Biology
• Neuropilins
• Vascular
• Monoclonal Antibodies
• Nervous system and sensory organs
• Structure of the brain
• Basic elements of the nervous system
• Spinal cord and spinal nerves
• Cranial nerves
• Domestic mammals
• Extrapyramidal feedback
• The somatic motor systems
• Autonomic components
• The central nervous system general considerations
• Imaging techniques
• BMC Pharmacology and Toxicology
• Adverse drug reactions
• Nervous system medications
• Nervous system mediations
• EudraVigilance database
• Care giving quality
• Parasympathetic nervous system
• Sympathetic nervous system
• Strange situation procedure
• Mother–child dyad
• BMC Cancer
• Central nervous system neoplasms
• Cancer registry
• Primary CNS tumors
• BMC Pulmonary Medicine
• Acute lung injury
• HCl aspiration
• Stellate ganglion block
• Non small cell lung cancer
• Versus afatinib
• Multiple central nervous system
• Confidence interval
• Primary central nervous system lymphoma
• Diffuse large B cell lymphoma
• Progression free survival
• Pediatric critical care medicine
• Central nervous systems
• The cardiovascular system
• Movement disorders in the ICU
• Status epilepticus
• Toxic metabolic encephalopathy
• Angiotensin II
• Sprague Dawley rats
• Renin angiotensin system
• Vascular hemodynamics
• Pharmacology recall
• Principles of pharmacology
• Cardiovascular system
• Gerontology
• Sexual Function
• Gastrointestinal Tract
• Pathological Changes
• System in Old Age
• The meninges
• The vertebral canal
• The nerve impulse
• The cranial nerves
• Medial lemniscal system
• The special senses
• Viva voce in medical pharmacology
• Medical pharmacology
• General pharmacology
• Cadiovascular system
• Renal system
• Gastrointestinal system
• Endocrine system
• Aids to the Examination
• Peripheral Nervous System
• health education
• health knowledge
• health
• health care
• medical research