BSC 2085 EXAM 1 QUESTIONS AND ANSWERS 100% PASS

BSC 2085 EXAM 1 QUESTIONS AND ANSWERS 100% PASS Histology would be best defined as a study of ________. es chemistry gross structures of the body - Answer- b. Tissues A structure that is composed of two or more tissue types that work together to perform specific functions for the body is a(n) ________. ex tissue system ex cell - Answer- organ Which of the following organs or structures would be found in the left iliac region? dix ch tines - Answer- intestines Which one of the following systems responds fastest to environmental stimuli? lar atic e us - Answer- nervous Homeostasis is the condition in which the body maintains ________. lowest possible energy usage b.a relatively stable internal environment, within limits c.a static state with no deviation from preset points d.a dynamic state within an unlimited range, depending on circumstances - Answer- a relatively stable internal environment, within limits Which of the following statements is the most correct regarding homeostatic imbalance? a.It is considered the cause of most diseases. b.The internal environment is becoming more stable. c.Positive feedback mechanisms are overwhelmed. d.Negative feedback mechanisms are functioning normally. - Answer- It is considered the cause of most diseases One of the functional characteristics of life is excitability or responsiveness. This refers to ________. estible food residues stimulating the excretory system ng changes in the environment and then reacting or responding to them nervous system causing all living things to sometimes experience anger necessity for all organisms to reproduce - Answer- sensing changes in the environment and then reacting or responding to them What is a vertical section through the body, dividing it into left and right, called? al nal tal verse - Answer- sagittal Which of the following describes the operation of the heart and blood vessels? mic anatomy ovascular anatomy mic physiology ovascular physiology - Answer- cardiovascular physiology One of the descriptions below is from the perspective of physiological study, the rest are from an anatomical perspective. Select the description below that comes from physiological perspective. a.The skull is formed by 22 facial and cranial bones. b.The chambers of the heart and blood vessels leading to and from the heart are separated by valves composed of fibrous connective tissue. c.The pancreas lies deep to the stomach within the abdominal cavity. d.The contraction of smooth muscle in blood vessels (vasoconstriction) can reduce the flow of blood through the vessel. - Answer- The contraction of smooth muscle in blood vessels (vasoconstriction) can reduce the flow of blood through the vessel. Prevention of water loss is a necessary function for life that would best fit in the category of ________. aining boundaries olism nsiveness tion - Answer- maintaining boundaries When a baby suckles at its mother's breast the stimulus at the breast is sent to the mother's brain (a region called the hypothalamus). The brain responds by releasing hormones to stimulate the production and the ejection of milk from the breast. This helps the newborn to receive nourishment and encourages more suckling. This example is best described as a ________. ive feedback of homeostasis sary life function ive feedback - Answer- positive feedback You are told to take an axillary temperature on a small child. You will place the thermometer ________. the tongue the armpit the rectum the forehead - Answer- armpit The single most abundant protein in the body is ________. a.DNA lobin gen se - Answer- collagen Carbohydrates are stored in the liver and skeletal muscles in the form of ________. se ycerides gen sterol - Answer- Glycogen Which of the following is a general function for a fibrous protein? port in management defense ysis tural framework - Answer- structural framework Salts are always ________. compounds e covalent compounds e covalent compounds gen bonded - Answer- ionic compounds Which of the following is the major positive ion outside cells? sium gen sium m - Answer- Sodium Choose the answer that best describes HCO3-. a.a bicarbonate ion n in the liver c.a weak acid d.a proton donor - Answer- A bicarbonate ion The four elements that make up about 96% of body weight are ______