Answer:
The processing power of the mammalian brain is derived from the tremendous interconnectivity of its neurons. An individual neuron can have several thousand synaptic connections. While these associations yield computational power, it is the modification of these synapses that gives rise to the brain's capacity to learn, remember and even recover function after injury. Inter-connectivity and plasticity come at the price of increased complexity as small groups of synapses are strengthened and weakened independently of one another (Fig. 1). When one considers that new protein synthesis is required for the long-term maintenance of these changes, the delivery of new proteins to the synapses where they are needed poses an interesting problem (Fig. 1). Traditionally, it has been thought that the new proteins are synthesized in the cell body of the neuron and then shipped to where they are needed. Delivering proteins from the cell body to the modified synapses, but not the unmodified ones, is a difficult task. Recent studies suggest a simpler solution: dendrites themselves are capable of synthesizing proteins. Thus, proteins could be produced locally, at or near the synapses where they are needed. This is an elegant way to achieve the synapse specific delivery of newly synthesized proteins.
Explanation:
Answer:
The answer to the question: The part of the tooth that is covered with enamel, would be: the crown of the tooth.
Explanation:
The human teeth are divided into two parts, a hardened one, which is the one we can see protruding from the gum line, and which is the one that we use to bite, pounce food and chew it before swallowing. This portion of the tooth is called the crown, it is the white, hardened, visible part, and it is covered with enamel to protect it from the mechanical and corrosive forces of both food, and saliva, as well as bacteria. The second portion of the tooth is known as the root, and it is the softer part that is protected and covered by the gums. The root anchors the tooth to the bone structures of the mandible and maxilla.
Answer:
The dermis is the second layer of the skin that protects the human body from stress and strain. It is found between the epidermis and the hypodermis or the subcutaneous tissues.
The dermis layer is composed of two layers: papillary dermis and reticular dermis.
The reticular dermis is the thick layer of the dermis, composed of the dense irregular connective tissues. It contains of elastic protein fibers that makes the skin stretchable and elastic (able to rebound).
<u>Therefore, the reticular dermis makes the skin stretchable and elastic (able to rebound).</u>
ALS was first discovered in studies conducted between 1865 and 1869 by French neurologist Jean-Martin Charcot. The condition became widely known in the late 1930s as Lou Gehrig's disease with the diagnosis of the American baseball player bearing the same name.
