Sinus Anatomy. INTRODUCTION. The paranasal sinuses (âthe sinusesâ) are air-filled cavities located within the bones of the face and around the nasal cavity and eyes. Each sinus is named for the bone in which it is located: Physiology.The pink membranes lining the sinuses make mucus that is cleared out of the sinus cavities and drains into the nasal passage. The right and left nasal passages are separated in the middle by a vertical plate of cartilage and bone called the nasal septum (figures 1 and 2).ach sinus is named for the bone in which it is located: Physiology. The pink membranes lining the sinuses make mucus that is cleared out of the sinus cavities and drains into the nasal passage.
[freÂ´kwen-se] 1. the number of occurrences of a periodic or recurrent process in a unit of time, such as the number of electrical cycles per second measured in hertz. In cardiac pacing terminology, frequency is expressed by the formula: frequency = Â½ Ã pulse width.
A genotype is BB, Bb, or bb. Allele frequencies refers to the frequency of a single allele in a population, while genotype frequency refers to the frequency of the different combination of those alleles in the population.Gamete frequency is equal to the allele frequency since gametes only carry one copy of the genome.llele frequencies are the frequencies of each allele, dominant (A) and recessive (a). In population genetics these are p & q. Gamete frequencies refer to the proportion of gametes made that have each allele.