Physiology Concepts Advanced Questions PDF

Physiology - Physiological Concepts Advanced Questions 1. Which of the following provides the BEST definition of a state of equilibrium a) Opposing processes or forces are active b) Opposing processe or forces are inactive c) Opposing processes or forces are in balance d) All processes or force...

Physiology - Physiological Concepts Advanced Questions 1. Which of the following provides the BEST definition of a state of equilibrium a) Opposing processes or forces are active b) Opposing processe or forces are inactive c) Opposing processes or forces are in balance d) All processes or forces are in balance 2. Which statement best describes the relationship between Anatomy and Physiology? a) Physiology studies living organisms, while Anatomy studies the same organisms after death b) Physiology studies the functions of specific structures within an organism, which are described by Anatomy c) They are the same d) Anatomy can only be studied on structures whose Physiology has been fully described 3. If your body temperature drops, what type of mechanism is responsible for returning it to normal a) Breathing b) Equilibrium c) Positive feedback d) Negative feedback 4. Which of the following activities would indicate that a novel object may be a living organism? a) It moves away when touched b) It bounces c) It is warm d) It deforms when pressure is applied 5. Physiological processes include: a) Emitting light b) Respiration c) Emitting sound d) Evaporation 6. Which of the following functions is dependent on the nervous system? a) Elimination of excess water b) Co-ordinated responses to stimuli c) Defense against infection d) Gas exchange 7. Which system provides protection from the environment and takes a part in temperature control a) Skin (integumentary system) b) Heart (Cardiovascular system) c) Skeleton d) Reproductive system 8. Which of the following systems does NOT interact with all the others: a) Nervous b) Circulatory c) Endocrine d) Musculoskeletal 9. How does negative feedback maintain a stable internal environment a) It exaggerates small deviations from the norm b) It reverses any deviations from a set point c) It accelerates processes which must be completed rapidly d) It predicts changes in the environment 10. Which of the following statements about homeostasis is consistent with the idea of a dynamic equilibrium a) Homeostasis continually adapts and adjusts to changing conditions b) Homeostasis maintains rigidly defined conditions c) One system cannot compensate for losses in another d) Each system is regulated separately 11. Which of the following is suitable for long-distance communication within the body? a) Paracrine effects b) Direct cytoplasmic transfer c) Endocrine signals d) Neurotransmitter 12. The fluid mosaic model implies that: a) All membrane proteins are rigidly anchored in the cell membrane b) Membrane proteins can freely interact with each other c) Cells cannot maintain a specific shape d) Cell membranes are semi-permeable 13. What CANNOT drive the passive movement of substances accross the cell membrane? a) ATP b) Chemical gradients c) Electrical gradients d) Random motion and collisions of ions and molecules 14. Which of the following statements about the major divisions of the nervous system is correct? a) The afferent division carries only sensory information; the efferent division carries only motor commands b) The afferent division carries only motor commands; the efferent division carries only sensory information c) The afferent division carries only sensory information; the efferent division carries both sensory information and motor commands d) The afferent division carries both sensory information and motor commands; the efferent division carries only motor commands 15. Which of the following statements about the divisions of the efferent branch of the nervous system is correct? a) The somatic division carries both voluntary and involuntary commands; the autonomic division carries only voluntary commands b) The somatic division carries only voluntary commands; the autonomic division carries only involuntary commands c) The somatic division carries only voluntary commands; the autonomic division carries both voluntary and involuntary commands d) The somatic division carries only involuntary commands; the autonomic division carries only voluntary commands 16. Which of the following distinguishes an axon from a dendrite a) Number of branches b) Thickness c) Excitability d) Length 17. At equilibrium potential there is no net flow of ions because: a) Ion channels are closed b) The membrane is only permeable to K+ c) Chemical and electrical gradients are in balance d) There is no potential difference across the membrane 18. The movement of ions in and out of a neuron as a result of electrical activity: a) Has a significant effect on Na+ concentration outside the cell b) Changes the equilibrium potential for Na+ c) Does not significantly affect ion concentrations inside or outside the cell d) Has a significant effect on K+ concentration inside thge cell 19. The sodium-potassium pump: a) Is responsible for the rapid movement of ions during an action potential b) Slowly exchanges 2 K+ ions for 3 Na+ ions at the expense of energy to maintain normal concentration gradients c) Is only active immediately after an action potential d) Requires an imbalance of ions between the intracellular and extracellular fluid 20. The threshold of a neuron is determined by: a) The voltage-gated ion channels in its mebrane b) The potential difference across the membrane c) The concentration of Na+ outside the cell d) Excitation