Monthly archives: March, 2015

AIIMS AIPMT PMT Special Neural Tissues

neuron

• Neural tissue exert the greatest control over the body’s responsiveness to changing conditions. • It generally develops from the ectoderm but microgliocytes (glial cell type) arise from the mesoderm of the embryo. • The special properties of the cells of the nervous tissue are, excitability and conductivity. –– Excitability is the ability to initiate …

Specialised connective tissue

The special connective tissue cartilage, bone and blood – each have unique cells and extracellular matrices that allow specialized functions. I. Cartilage • Cartilage is a soft skeletal tissue. It is not rigid like bone. • It is found more abundantly in vertebrate embryo because most of the bones forming skeleton of the adult are …

Animal Connective Tissues

Animal  Connective tissue • Connective tissue, formed from mesoderm of the embryo, is the most abundant and widely distributed tissue of the body. • This tissue provides the structural framework and support to different tissues and helps in body defense, repair, fat storage, etc. Components of connective tissue • Three components are present in the …

AIIMS AIPMT PMT Reference question and answers series

Medical_entrance

1.What is silent area in human brain? Until recently, the prefrontal areas of human brain were referred to as the “silent areas” or “uncommitted cortex”, because injury to these regions was not accompanied by sensorimotor signs, and the function of these areas was not clear. Prefrontal cortex or PFC, has long been known to endow …

AIIMS Special Assertion and Reasoning 2015

Directions : In the following questions (1-75), a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as : (a) If both Assertion and Reason are true and Reason is the correct explanation of Assertion. (b) If both Assertion and Reason are true but Reason is not the …

AIIMS Model Paper 2015

1. Two different animals are classified into the same family. This means that they would be classified in (a) the same phylum but different class (b) the same class but different species (c) a different kingdom and different phylum (d) a different class and different order. 2. The amount of DNA in a cell can …

JEE Physics Multiple choice questions

This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d) out of which ONLY ONE is correct. 1. The input resistance of a silicon transistor is 100 W. Base current is changed by 40 µA which results in a change in collector current by 2 mA. This transistor is used …

Gene Linkage Groups

Linkage group • A linkage group is a linearly arranged group of linked genes which are normally inherited together except for crossing over during cell division. They act and move as a unit rather than independently. • Because the two homologous chromosomes possess either similar or allelic genes on the same loci, they constitute the …