of gastrulation, the embryonic node. This essay will explore the role of motile cilia damage and genetic mutation in the array of respiratory diseases. All types of cilia have a length of about 10-15 μm and comprises of the same basic structure. A cilium is a microtubule-based organelle, which extends from a microtubule organizing chamber- the basal body, a centriole and at the apical surface of the cell bears microtubule cytoskeleton called the ciliary axoneme surrounded by a specialized ciliary
Throughout this discovery process there have been many questions that have guided the scientific community towards finding answers. One of the earlier questions was “how does the embryo take form and differentiate to become an organised organism?” This question began to be answered in 1924, when H Spermann and H mangold published a paper describing their experimentation with newt embryos. They discovered that by taking the dorsal lip and transferring it to the ventral side of a new embryo; it would
The start of any evolutionary story told about us lies within the origin of the eukaryote cell. This remarkable event consisted of a revolution of cell type matched in momentousness by the arrival on the biological scene of the prokaryote (O’Malley). Bacteria had a couple billion years head start on eukaryotes and have given rise to many biochemical processes that are essential to the ecosystem (Wernergreen). One organism living within another defines endosymbiosis. Nobody can say the exact origin
I agree with Athenian philosopher, Epicurus’ ethical philosophy that ataraxia is the highest good for a human being and that aponia aids in ataraxia due to one’s mind and body coexisting within a single faction in order for one to function properly at their highest regard. It is often impossible and undesirable for someone to be at their highest good in such mental capacity but be at their lowest capacity via their physical just as it’s undesirable for the opposite to happen. When a human being
3. Physiology and Anatomy of Nose: 3.1 Nasal Anatomy: The human nose is the most protruding part of the face which extends approximately 3-5 cm in height externally and 10 cm long nasal cavity internally (Sforza, Grandi, De Menezes, Tartaglia, & Ferrario, 2011). Human nasal cavity starts from external nares (nostrils) to the nasopharynx (the upper section of the throat) which is equally divided by the nasal septum into 2 similar non-connected halves i.e., left- and right-nasal cavity. Anatomically