HESI A2 Anatomy and Physiology Part 3

102. Which of the following is the connective area where nerve impulses send neurotransmitters across a synapse to a muscle cell to stimulate muscle contraction? A) sarcomere B) tendon C) nicotinic receptors D) neuromuscular junctions 103. Which of the following is the region of the brain that controls and regulates autonomic functions such as respiration, digestion, and heart rate? A) cerebellum B) medulla oblongata C) temporal lobe D) cerebral cortex 104. Which of the following describes the primary function of the pyloric sphincter? A) to regulate the movement of digested food material from the stomach to the duodenum B) to neutralize stomach acid C) to prevent food materials and stomach acid from leaking into other bodily tissues D) to begin the process of chemical digestion 105. Which of the following is the location of fertilization in the females? A) uterus B) fallopian tube C) endometrium D) fimbriae 106. The pineal gland is located in which of the following areas in the body? A) below the larynx B) above the kidney C) at the center of the brain hemispheres D) at the base of the brain 107. Which of the following processes aids scientists in observing a population sample in order to answer questions about the whole population? A) univariate analysis B) inferential statistics C) descriptive statistics D) probability 108. Which of the following biological macromolecules is non-soluble, composed of hydrocarbons, and acts as an important source of energy storage for the body? A) carbohydrates B) nucleic acids C) lipids D) proteins 109. Which of the following is specialized tissue in the right atrium that acts as the heart's natural pacemaker by generating the electrical signal for the heartbeat? A) sinus venosus B) sinoatrial node C) atrioventricular node D) septa 110. Which of the following is a dense, interconnected mass of nerve cells located outside the central nervous system? A) ganglion B) dendrite C) cranial nerve D) pons 111. Which of the following is the primary cell found in the tract of the small intestine? A) surface absorptive cells B) surface lining cells C) parietal cells D) hepatocytes 112. Which of the following describes the general function of cytokines in the immune system? A) they communicate between cells to instigate an immune response B) they inhibit blood clotting during inflammation responses C) they bind to specific pathogens to increase pathogen mass D) they transport pathogens trapped in mucus to be destroyed in the stomach 113. Which of the following describes the path through which air moves during inhalation? A) mouth/nose > pharynx > larynx > trachea > bronchi > bronchioles > alveoli B) bronchioles > alveoli > bronchi > larynx > pharynx > lungs C) mouth/nose > bronchi > bronchioles > alveoli > lungs > trachea D) alveoli > bronchioles > lungs > bronchi > trachea > larynx > pharynx > mouth/nose 114. Which of the following is not a function of progesterone in the female reproductive system? A) expression of secondary sexual characteristics, such as enlarged breasts B) stimulation of milk production in the breasts C) regulation and preparation of the endometrial lining of the uterus for potential pregnancy D) inhibition of contractions of the uterus as the ovum is released 115. Which of the following layers of skin acts as an energy reserve by storing adipocytes and releasing them into circulation when energy is needed? A) epidermis B) dermis C) hypodermis D) stratum basale 116. Neurotransmitters send chemical messages across the gap between one neuron and another in which of the following structures? A) cell membrane B) ganglion C) synapse D) axon 117. Hund's rule states which of the following? A) chemical bonds are formed only between electrons with similar spin B) the attraction between electrons holds atoms together C) a ground state atom always has a completely filled valence shell D) electrons fill orbitals singly and with similar spin before pairing 34) Which of the following is the primary function of the large intestine? A) absorbing digested material into the blood B) nutrient processing and metabolizing C) absorbing water and compacting material into solid waste D) bile production and storage 35) When setting up the above experiment, the scientist has the option of using a separate water filter for each of the three tanks or using a single filtration system that attaches all three and affects them simultaneously. Which of the following filter set ups makes a more valid experiment and why? A) separate filters for each of the three tanks, because this ensures a higher quality of water for each tank B) one filtration system for all three tanks, because this makes filtration a controlled variable C) one filtration system for all three tanks, because this reduces the workload for the researcher D) separate filters for each of the three tanks, because this adds another variable to be tested and analyzed for inclusion in the experiment's results 36) The above experimental design description is an example of which of the following types of experiments? A) field experiment B) natural experiment C) controlled experiment D) observational study 37) Which of the following is the control group in the above experiment A) tank A B) tank B C) tank C D) there is no control group in this experiment 38) Which of the following is a type of white blood cell that plays a key role in adaptive immunity by seeking out, attacking, and destroying targeted pathogens? A) B cells B) goblet cells C) antibodies D) T cells 39) Which of the following are the blood vessels that transport blood to the heart? A) arteries B) capillaries C) venules D) veins 40) Which of the following organelles are the site of lipid synthesis? A) smooth endoplasmic reticulum B) ribosome C) rough endoplasmic reticulum D) golgi apparatus 41) Which of the following describes a series of measurements that produces exact results on a consistent basis? A) accurate B) precise C) valid D) significant