(Mesoderm) Germ layer derivatives at a glance

Parts of the mesoderm

1.       Paraxial mesoderm

2.       Intermediate mesoderm

3.       Lateral plate mesoderm

A .Somatopleuric mesoderm

B .Splanchnopleuric mesoderm

4.       Angioblastoma

Germ layers

                1.Paraxial mesoderm derivatives:

A .Somatic

B .Microglia

A. Somatic derivatives: divided into two

                                1. Dermatomyotome: divided into two

A .Dermatome: Dermis, Subcutaneous tissue, Erectors pilorum

                                B .Myotome: Skeletal muscle

                2. Sclerotome derivatives: divided into three 

                                A. Axial Skeleton

                                B .Mesenchyme: Connective tissue & synovial membrane

                                C .Pachymeninx: Dura mater, Sclera

2. Intermediate Mesoderm derivatives:

                1. Paranephrons

                2. Pronepephric duct

                3. Mesonephrons

                4. Mesonephric duct (wolffian duct) derivatives:

A .Trigon of urinary bladder

B .Ureteric bud –

a. Ureter

b. Renal pelvis

c. Major and minor calices

d. Collecting tubule

                                                C. Prostate

                                                D .Epididymis

                                                E .Ductus deferens

                                                F .Seminal vesicle

                                                G .Ejaculatory duct

                                                H .Part of prostatic urethra

                5. Metanephrons: Nephron

Germ layers

3. Lateral plate mesoderm derivatives:

                a. Somatopleuric mesoderm derivatives :
                                1. Adrenal cortex

                                2. Gonadal cortex

                                3. Paramasonephric duct ( mullarian duct ) derivatives :

                                                a.Incase of male

·         Appendix of testis

·         prostatic utricle

                                                b .In case of female

·         Uterus

·         Uterine tube

·         Upper part of vagina

4. Parital layer of Peritoneum, pleura, pericardium

                b. Splancnopleuric mesoderm derivatives:

                                a. Viseral musculature

b. visceral mesenchyme

c. Branchial musculature

d. Branchial Mesenchyme

e. Viseral layer of Peritoneum, Pleura, Pericardium

4. Angioblastoma derivatives:

                                a. Endothelioblastema: Endothelium and Endothelial lining of vessels

                                b. Haemoblastema: Spleen, lymphoid tissue, myeloid tissue

Collected and concise only for post graduate students,Pictures are collected from Google.