The Birds and Psycho Essay Example | Topics and Well Written Essays - 750 words

The Birds and Psycho - Essay Example Considering that these two movies are horror movies, the sound and the music tracks involved plays a great role in developing the suspense and tension, which are the major reactions elicited by the movies. While moving from one scene to the other, the sound track keeps changing and advancing in their menacing nature, making the audience feel as if the next scene is happening right there with them. This sound technique has been extensively applied in the movie† the Bird.† At the scene where seagulls set themselves on children during Cathy’s party, the soundtrack that precedes the scene is definitely warning. Additionally, when Melanie goes to check on Cathy at school, out of fear that she might be harmed on her way from school, there is sinister sound track that plays, as the crows are amassing themselves in the school’s play ground ready to attack children, raising tension and creating suspense on the audience as they wait to see what happens next (Raubicheck and Walter, 28). The same ominous application of sound can be identified in the movie â€Å"Psycho†. The sound track that is applied in the scene where Marion enters a bathroom to shower is terrifying. The sound track precedes the coming of a shadowed-figure of a woman, who stabs her to death. The sounds playing before the scene where the detective is attacked by the shadowed woman figure , creates great tension and suspension, which makes the audience anticipate, without any doubt that something terrible is going to happen. And sure enough, the suspense and tension is confirmed by the sudden stabbing of the detective to death (Raubicheck and Walter, 56). Strange and undisclosed character use is yet another comparison between the movies, "The Birds" and â€Å"Psycho". In both movies, it is not clear what causes the attacks and deaths that occur. Alfred Hitchcock uses strange characters in both movies, where in â€Å"the Bird†,

Adrenoceptors and sympathomemtics Essay Example | Topics and Well Written Essays - 500 words

Adrenoceptors and sympathomemtics - Essay Example In the vascular and smooth muscle cell, the alpha-2 adrenergic receptors are located in the postsynaptic terminal. Most of ÃŽ ± 1-adrenoceptors activation are linked to excitation of postsynaptic target ÃŽ ±-2-adrenoceptors usually activates the Gi inhibitory protein that in turn decreases cAMP. The inhibitory function of alpha-2 adrenergic receptors is vital negative feedback system to control of the discharge of presynaptic nerve terminal’s noradrenaline. These prevent prolonged activation of the effector organs such as male sex organs, eyes and veins (Bryant, Knights and Salerno, 2010, p. 209). These alpha-adrenergic receptors usually control the vasoconstriction of arterioles in skin, pupil dilation, gut relaxation and smooth muscle relaxation in the prostrate and bladder neck. Classification of beta-adrenergic receptors into ÃŽ ²1, ÃŽ ²2 and ÃŽ ²3 considers their affinity to agonist or antagonist. Location of site that recognises agonist and antagonist is in the portion of receptor that is membrane-bound. Distribution of Beta-adrenergic receptors is in various tissues. Beeta-1 is in the heart, beta-2 in the smooth muscle and beta-3 in adipocytes cell membrane (Bryant, Knights and Salerno, 2010, p. 210). All of the beta-adrenergic receptors lead to activation of adenylyl cyclase in which the agonists leads to formation of cAMP from ATP. Activation these receptors leads to increase heart beat rate, relaxed bronchus and uterine and vasoconstriction of arterioles supplying blood to skeletal muscle. Sympathomimetic drugs are those designed to act similarly like adrenaline or noradrenaline by their action on adrenoceptors and act in sympathetic stimulation of the system (Bertram and Anthony, 2009, p. 128). The classification of these drugs as direct or indirect agonist depends on their mode of action in stimulation of the neural