Answer:
Anterior (or ventral) Describes the front or direction toward the front of the body. The toes are anterior to the foot. Posterior (or dorsal) Describes the back or direction toward the back of the body. ... Lateral describes the side or direction toward the side of the body.
Explanation:
Answer:
Chemically altered nucleosides derived from canonical ribo-or deoxyribonucleoside-derivatives of adenosine, cytosine, guanosine, and uridine or thymidine are found in all types of nucleic acids, DNA and RNA. They are particularly abundant in noncoding RNAs, such as transfer RNAs and ribosomal RNA of higher organisms. By increasing the structural diversity of nucleic acids, modified nucleosides play important roles in gene expression and in regulating many aspects of RNA functions. They also contribute to nucleic acid stability and to protection of genetic materials against virus aggression. In this chapter we present a historical overview of the discovery, occurrence, and diversity of the many naturally occurring modified nucleosides that are present in both DNA and RNA of diverse organisms. We also briefly describe the different enzymes that accomplish these nucleic acid ‘decorations’. More information about the structure, function, biosynthesis and evolutionary aspects of selected modified nucleosides in DNA and RNA and their corresponding modification enzymes can be found elsewhere in this volume.
Explanation:
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Answer:
A patient with a spinal cord injury that resulted in paralysis of the legs has paraplegia (option c).
Explanation:
Paraplegia consists of paralysis of the lower extremities or legs due to injuries to the spinal cord, from the dorsal vertebrae. Other causes of paraplegia include tumors and malformations that affect the spinal cord.
<u>The spinal cord provides the nerves that allow the innervation of the limbs</u>. A spinal cord injury interrupts communication between the brain and the effector (motor) muscles as well as the sensory nerves in the affected limbs, producing paralysis. When it occurs in the legs is called paraplegia.
The other options are not correct because:
a. Hemiplegia corresponds to paralysis of upper and lower limbs on one side only.
b. Pseudoplegia is a paralysis that is due to mental disorders such as conversion disorder, without injury to the nervous system.
d. Dysplegia is associated with motor disorders observed in children with varying degrees of dysfunction or cerebral paralysis.
A person should at least get 60 minutes of physical activity a day.
