Talk:BGDB Face and Ear - Quiz: Difference between revisions

Revision as of 14:23, 20 June 2011

@@ Line 24: / Line 24: @@
-----
+{The adult human upper and lower jaw bones are formed by:
-{The sequential development of the renal structures within intermediate mesoderm can best be described as:
 |type="()"}
-+ pronephros, mesonephros, metanephros
++ membranous ossification
-- pronephros, metanephros, mesonephros
+- Reichert's cartilage
-- mesonephric duct, metanephros, mesonephros
+- Meckel's cartilage
-- mesonephric duct, paramesonephric duct, metanephros
+- pharyngeal arch neural crest
-- uteric bud, ureter, urinary bladder
+- first pharyngeal membrane
-||The rostro-caudal paired strips of intermediate mesoderm form in a downward sequence: pronephros (in the neck region),  mesonephros (along the length of the trunk) and metanephros (at the level of the hindlimbs). The metanephros being the developing adult kidney.
+||Membranous ossification forms both the upper (maxillary) and lower (mandibular) jaw bones. Meckel's cartilage is a template for the lower jaw formation only, and may remain as a fibrous remnant within the mandible. Reichert's cartilage is from the second arch cartilage and is not a jaw structure. Pharyngeal arch neural crest forms only the cartilage template for the jaw and the first pharyngeal membrane forms the tympanic membrane.
 {The sequential development of the genital system can best be described as:

	membranous ossification
	Reichert's cartilage
	Meckel's cartilage
	pharyngeal arch neural crest
	first pharyngeal membrane

	internal and external genital tract dependent upon primordial germ cell hormone secretion
	gonadal differentiation and hormone secretion determining internal then external tract development
	mesonephric duct hormone secretion forming genital ridge then internal and external tract development
	internal tract determining gonadal then hormone secretion for external tract development
	paramesonephric duct forming genital ridge then hormone secretion for internal and external tract development

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

	Sertoli cells and thecal cells
	Leydig cells and interstitial cells
	primordial germ cells and oocytes
	thecal cells and interstitial cells
	ductus deferens and mesonephric ducts

	descent of the adrenal glands and gonads
	ascent of the adrenal glands and genital tubercle
	ascent of the kidneys and descent of the gonads
	descent of the kidneys and adrenal glands
	none of the above

	testis cortical and ovary medullary
	ovary cortical and testis medullary
	prenatal meiosis in the ovary germ cells
	prenatal meiosis in the testis germ cells
	prenatal mitosis in the ovary germ cells

	true
	false

	true
	false