scio

Flowchart of the brain and its major divisions

Phylogenetic Development of Vertebrate Brains

Insect nervous system

Drug reinforcing circuit

Normal Saturations (O2) And Pressure

The vicious cycle of osteolytic metastasis

Menstruation Rag

Neurotic excoriations: back Excoriations of the upper, mid-back and gluteal areas and linear areas of postinflammatory hyperpigmentation, crusting, and scarring in a 66-year-old diabetic female. Lesions have been present for at least 10 years but the ulcerated crusted lesion resolved with cloth tape occlusion. Once the protection was removed, the patient resumed excoriating the sites.

The two cells hypothesis

A. The preovulatory follicle produces estradiol through a paracrin interaction between the theca and granulosa cells. Theca cells provide the granulosa cells with androstenedione in order to produce estradiol. Granulosa cells express the right enzymes that convert androstenedione to estradiol (P450 aromatase, 17β hydroxysteroid dehydrogenase1). 

B. In corpus luteum, granulosa cells obtain vessels, LH receptors and enzymes for progesterone synthesis. Theca cells are the source of androstenedione that is necessary for the production of estradiol in granulosa cells. Gonadotropins, steroidogenic factor 1 (SF-1) and steroidogenic acute regulatory protein (StAR) have fundamental functions in ovarian steroidogenesis. (ATP, adenosine triphosphate; cAMP, cyclic adenosine monophosphate; FSH-R, follicle stimulating hormone receptor; LH-R, luteinizing hormone receptor; P450 arom, P450 aromatase; 17β-HSD-I, 17-β hydroxysteroid dehydrogenase-I). (with permission of Larsen et al., eds. The physiology and pathology of the female reproductive axis. En: Williams Textbook of Endocrinology. Saunders; 2003; 604.)

Events of the cardiac cycle for left ventricular function, showing changes in left atrial pressure, left ventricular pressure, aortic pressure, ventricular volume, the electrocardiogram, and the phonocardiogram.

“Ossification in Muscles of Trunk in a case of generalised Ossifying Myositis.”