The circulatory system of the blackworm is closed containing arteries, veins and a muscular pumping dorsal vessel which contracts enabling blood to be moved from the posterior end, where gas exchange occurs, to the anterior region, the head of the
1.) 3 structures that constitute the female external genitalia are: a. Mons veneris b. Labia majora c. Labia minora The mons veneris are also known as the mons pubis.
The ganglia of neighboring segments are linked by connectives, while the hemi-ganglia are connected by commissures. Overall, the structure of this nervous system appears as a ladder-like chain consisting of a brain, two connectives, and a ventral nerve cord. Because lobsters lack a cerebral cortex, they rely on this complex nervous system to translate pain impulses into the sensation of pain
Figure 16 displays the phylogenetic tree for a pig and shows that these species consists of several clades. A clade is specie with one common ancestor and all of its descendants. In Figure 15, the phylogenetic tree shows the very close relationship between the pig (Sus Scrofa) and Sus bucculentus as they have the most recent common ancestor. Figure 15, also shows that sus scrofa is more related to sus verrucisus than sus cebifrons as it closer to the phylogenetic tree. 4.
The majority of the ride is painstakingly quiet, with Nero being too hesitant to break the silence and Avilio seemingly more tense than usual. He sits in a rigid position much too harsh to be natural and his knuckles are white around the wheel. Nero guesses that something must have gone wrong in town, but feels that if he asked, Avilio would drive the car into the nearest building. It doesn’t take them long to reach a large dirt field and Avilio steps on the break so abruptly that Nero has to slam his hands on the dash to prevent his face from making impact with the leather.
1) Plants have evolved many ways in which they can survive well on land. a) Identify three changes that had to occur for plants to move from a life mostly in water to a life on land. Three changes that had to occur for the plants to move from aquatic to terrestrial life are the following: Body support: In water, the plants are buoyant and the effect of gravity on them is minimal. The reason of developing rigid stem is to support the plants in a way that it can grow higher above the land.
2a. If sunlight were to disappear almost completely, it would leave lasting effects on many organisms such as an earthworm, a shark, a maple tree, a saguaro cactus, or a teenager. While looking at an earth worm, the short term effects would be beginning to see more of the species during the day. Earthworms are nocturnal, so they live beneath the surface when it is daylight and come out once the sun goes down. Because of this in the long run, the earthworm species would eventually become overpopulated; they would be above the surface more, so they would have more time to reproduce.
Unlike our cardiac chambers earth worm circulate blood through vessels, which inspired so deeply that I started thinking to make my career in the
Furthermore, it connects structures of the endocrine system with the nervous system and works in together with limbic system structures so as to generate and manage emotions and memories. Location The diencephalon is located between the cerebral hemispheres, superior to the midbrain.
Throughout Aldous Huxley’s Brave New World (1932) he underscores the problems associated with artificial reproduction in the New World through lack of emotional driven sex, lack of individuality and loss of respect for human spirituality. One of the fundamental questions posed by Huxley is “Do humans want to be happy or to be free?”. The answer to the question in regard to artificial reproduction is found when Mr. Foster states, “[In] the vast majority of cases, fertility is merely a nuisance” (Huxley 13). Mr. Foster makes it apparent that fertility interferes with the hedonistic happiness of those alive in the New World. Mr. Foster outlines the importance of artificial reproduction in relation to happiness when he says “Guaranteed sterile.
Introduction The human genome consists of 23 pairs of chromosomes. 22 of those pairs are homologous and autosomal. The 23rd pair is the sex determining pair of chromosomes. In females, the chromosomes are homologous, namely the karyotype XX.
Everyone is entitled to choose their own lifestyle, whether they want to have a child or not. Some females who seek to have children find it easy, although some are unfortunate. There are numerous of reasonings, such as being too old to be pregnant, damage to the Fallopian tube or uterus and cancer radiation or chemotherapy. As our generation goes on, many discoveries revolving biology is produced and one of it is the "In Vitro Fertilization". It is the procedure of fertilization where they save sperm sample, take an egg from the women and physically combining it in a laboratory dish where the egg and the sperm is now called an embryo.
The ovaries are found only in women. They make the hormones estrogen and progesterone which help develop breasts at puberty, regulate the menstrual cycle, and support a pregnancy. The last gland in the endocrine system are the testes. The testes play a large role in making testosterone and also in making
Fertility transition theory with respect to gender equity is challenged by two statements: The measures taken by men and women to prevent births has resulted to a fertility decline and essential changes will occur to women’s lives as a result of a persistent decline of fertility. The latter statement can be further supported by the fact that women belonging to countries with high fertility suggest spending a huge amount of time on childbearing and child caring. Thus, it can indicate that the country’s focus on parenthood has deviated from other aspects when fertility decline continues (Mcdonald, 2000) which could be the case in Japan. Several studies to justify the fertility decline in many countries have tried different methods and tested
Artificial reproduction is the process in which new life is created in an unnatural way or in a synthetic environment. Artificial reproduction includes the process of fertility in an uncommon way. The process of synthetic fertility uses Assisted Reproductive Technology (ART) to artificially create an organism. ART is a type of reproductive technology used in treatment in which the removal of eggs or sperm are manipulated to create a distinct being outside the body. There are several artificial reproduction/fertility methods that use ART such as: artificial insemination, test-tube fertilization, and surrogate motherhood.
