Gratings of alternating grooves and ridges were moved sinusoidally back and forth across the monkey's fingerpad. Each grating was completely specified by its spatial period and the movement by its peak speed: together these determined the peak temporal frequency at which grating ridges passed over the skin. Responses of cutaneous, mechanoreceptive afferents innervating the fingerpad were charac...

This study aimed to describe the impressive diversity of vascular plexiform structures of the hypodermal layer of human skin. We chose the human body site with the highest concentration of dermal corpuscles, the human digit, and processed it with the corrosion casting technique and scanning electron microscopy analysis (SEM). This approach proved to be the best tool to study these microvascular...

THE SUCCESSFl'L application of radioactive indicators in physiology caused the early introduction of a radioactive component into the erythrocytes and their use in blood volume determinations. While this method has found application in animal experiments, it is not very suitable for determination of the blood volume of humans, since ironlabeled red corpuscles can only be obtained in vivo, and t...

1. The malarial parasite is extracellular throughout its entire life cycle; that is, when it is not free in the blood serum, it is attached to the external surface of the red corpuscle. 2. Adult parasites follow the same procedure in attaching themselves to the outer surface of the red corpuscles as do the young parasites. 3. Adult parasites are most frequently seen attached to surface corpuscu...

anatomical and histomorphometrical study of sheep’s thymus was conducted by 75 apparently healthy fetuses that collected from urmia’s industrial slaughterhouse. after anatomical study, the samples were fixed in 10% formal saline, passaged and histological paraffin sections prepared in 5-7 μm in thickness, and by h&e; method stained. histomorphometrical study performed by graded and latticed len...

The phagocytosis of red corpuscles, while frequent in the normal dog, rat, and guinea pig, is slight in man, the rhesus monkey, and many rabbits. In cats it is always negligible in amount and frequently absent. Phagocytosis will not suffice as a general explanation of normal blood destruction. When the liver, spleen, and bone marrow of the cat, dog, rabbit, or monkey are slowly perfused with de...

Laveran ( I ) has consistently claimed f rom the beginning that the parasites were extracellular and that they attached themselves to the surface of the red corpuscles, adhering to them " b y pressing on them." Richard (2) thought at one time that the parasites were within the substance of the red corpuscle; but later (3) he returned to Laveran 's opinion that they were attached to the surface....

BACKGROUND The aim of this study was to analyze the pattern and types of sensory nerve endings in ankle ligaments using immunohistochemical techniques, in order to gain more insight into functional ankle stability. METHODS One hundred forty ligaments from 10 cadaver feet were included: the calcaneofibular and anterior/posterior talofibular ligaments from the lateral complex; inferior extensor...