Template:BGDA Practical 6 - Week 4 Interactive: Difference between revisions
From Embryology
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- lateral to medial: lateral plate - paraxial - intermediate - axial | - lateral to medial: lateral plate - paraxial - intermediate - axial | ||
+ medial to lateral: notochord - somites - intermediate - lateral plate | + medial to lateral: notochord - somites - intermediate - lateral plate | ||
||The [[E#extraembryonic mesoderm|extraembryonic mesoderm]] is outside the embryonic disc. Intermediate mesoderm is outside the paraxial layer. Cardiogenic mesoderm is a region of prechordal splanchnic mesoderm. Note - how I always mispronounce "paraxial" as "para-axial", it's a bad habit of mine, the correct pronunciation is "par" then "axial". | |||
- medial to lateral: paraxial - axial - intermediate - cardiac | - medial to lateral: paraxial - axial - intermediate - cardiac | ||
{Somites form regularly at the level of the body in the direction | {Somites form regularly at the level of the body in the direction | ||
|type="()"} | |type="()"} | ||
+ rostrocaudally | + rostrocaudally | ||
||In the direction from head (rostro) toward tail (caudal). This direction of development is seen in many other structures such as: neural tube neuropore closure (cranial then caudal); intermediate mesoderm (early kidney formation) and limb development (upper then lower limb). | |||
- caudorostrally | - caudorostrally | ||
{Select the correct options below for the structures formed by sclerotome | {Select the correct options below for the structures formed by sclerotome: | ||
|type="[]"} | |type="[]"} | ||
+ vertebra | + vertebra | ||
||Only the vertebral column structures intervertebral disc and vertebra are formed from {{sclerotome}}. | |||
- dermis | - dermis | ||
- limb bud cartilage | - limb bud cartilage | ||
+ intervertebral disc | + intervertebral disc | ||
||Only the vertebral column structures intervertebral disc and vertebra are formed from {{sclerotome}}. | |||
- skeletal muscle | - skeletal muscle | ||
Dermis and skeletal muscle form from the dermomyotome, dividing into the dermatome (dermis) and myotome (skeletal muscle). | |||
{Much of the intra-embryonic coelom (body cavity) is lined by the: | {Much of the intra-embryonic coelom (body cavity) is lined by the: | ||
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|type="[]"} | |type="[]"} | ||
- lead | - lead | ||
|| Lead in a high enough concentration acts as a {{teratogen}}. | |||
+ vitamin B<sub>9</sub> | + vitamin B<sub>9</sub> | ||
||Vitamin B<sub>9</sub> is folic acid or folacin or folate required for cell metabolism and neural tube closure. Iodine is required for thyroid hormone synthesis which is required for normal neural development [http://www.healthinsite.gov.au/topics/Iodine HealthInsite - Iodine]. | |||
+ iodine | + iodine | ||
|| {{Iodine}} is required for thyroid hormone synthesis which is required for normal neural development [http://www.healthinsite.gov.au/topics/Iodine HealthInsite - Iodine]. | |||
- chlorine | - chlorine | ||
|| Chlorine is good for the pool or bleaching your clothes. | |||
- vitamin B<sub>3</sub> | - vitamin B<sub>3</sub> | ||
|| Vitamin B<sub>3</sub> is niacin is a precursor to NADH, NAD+, NADP+ and NADPH play essential metabolic roles in living cells not just neural tissue. | |||
