constriction meaning in biology

Contraction means to bring two things together, or shorten the distance between them, and usually describes the movement of muscle fibres. Anatomy. Working Scholars® Bringing Tuition-Free College to the Community. (The primary constriction refers to the region of the chromosome occupied by the centromere.) Sociology 110: Cultural Studies & Diversity in the U.S. Library Organization, Search Engines & Research Strategies, How to Promote Online Safety for Students in Online Learning, 2021 Study.com Scholarship for Homeschool Students, How Teachers Can Improve a Student's Hybrid Learning Experience. Constriction is an autonomic process, which means you cannot consciously control it. This is accomplished by means of paired, forked hemipenes, which are stored, inverted, in the male's tail. It divides the chromosome into two sections, or “arms.” {{courseNav.course.mDynamicIntFields.lessonCount}} lessons conˈstrictive adj. Smooth muscle is one of three muscle types in the body and is often found in internal organs such as the stomach, bronchi, and bladder. Synonyms & Antonyms Example Sentences Learn More about constriction… ), Contemporary Issues in Comparative Psychology, pp. S00.34XA. Does the arterial blood flow increase or decrease? . . Although some species of venomous and mildly venomous snakes do use constriction to subdue their prey, most snakes which use constriction lack venom. ‘Sponges are capable of regulating the amount of flow through their bodies by the constriction of various openings.’. vasoconstriction: The closing or tightening of a blood vessel. 4. This usually refers to structures where materials are allowed to pass. Enrolling in a course lets you earn progress by passing quizzes and exams. The chromosome may contain a constriction site along the chromosome other than the primary constriction known as secondary constriction. A boa constrictor was observed attacking a spinytail iguana for an hour, and the iguana survived. Constrictionsare rulesor factorswhich limitwhat you can do and preventyou from doing what you wantto do. ( kənˈstrɪkʃən) n. 1. a feeling of tightness in some part of the body, such as the chest. 3 : something that constricts. External constriction … Once a semester I use Study.com to prepare for all my finals. (noun) Fear caused a sudden constriction in my chest. Study.com’s lessons, Love it! The act of constricting, the state of being constricted, or something that constricts. So how does it work? flashcard set{{course.flashcardSetCoun > 1 ? After I review The answer is no. all of 3. something that is constricted. Constriction is a key regulatory process within the body that is important for proper functioning in many of our physiological systems. Many blood vessels only have innervation from the _____ division of the ANS. (economics) A period of economic decline or negative growth. - Definition, Causes & Purpose, What is Physiology? However, the amount of blood that goes to different parts of the body will vary depending on the functions of those body parts and the circumstances. An error occurred trying to load this video. Clinical Significance. (Genetics) genetics a localized narrow region of a chromosome, esp at the centromere. constrict verb (BECOME TIGHTER) [ I or T ] to become tighter and narrower, or to make something become tighter and narrower: He hated wearing a tie - he felt it constricted his breathing. 4. to become constricted. [11][12], As this is comparatively recent research (2015), it is possible that other constrictors kill in other ways. - Functions & Explanation, What is Angiogenesis? con•strict. The blood vessels in the muscles will dilate in order to increase blood flow and oxygen in those areas. To prevent this from happening, the smooth muscles of the eye will constrict when light increases in order to reduce the amount of light that is allowed to enter the eye. a muscle that constricts a hollow part of the body, as the pharynx. ‘asthma is a constriction of the airways’. However, the amount of light necessary to see a particular image may change depending on the light source. The snake will then wrap one or two loops around the prey, forming a constriction coil. a feeling of tightness in some part of the body, such as the chest. [1725–35; < Latin … Total Peripheral Resistance & Blood Flow Regulation, Homeostasis and Temperature Regulation in Humans, Metabolic Acidosis: Causes, Symptoms, and Treatment, What Is Pulse Pressure? - Definition & Explanation, What are Veins? 1 The action of making something narrower by pressure or of becoming narrower; tightening.

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