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A&P2 exam 3
lecture
| Question | Answer |
|---|---|
| Both ducts empty lymph into venous junctions of which vessels? a. Brachial and cephalic veins b. Femoral and iliac veins c. Radial and ulnar veins d. Internal jugular and subclavian veins | Internal jugular and subclavian veins |
| What helps move lymph through low-pressure lymphatic vessels? a. Skeletal muscle contractions b. Breathing movements c. Valves d. All of the above | All of the above |
| results in short-term but severe localized edema caused by blockage of lymph return. Which condition is this describing? a. Edema b. Lymphoma c. Lipedema d. Lymphedema | Lymphedema |
| What do B cells produce? a. Plasma cells that secrete antibodies b. Red blood cells c. Platelets d. Histamine-releasing cells | Plasma cells that secrete antibodies |
| Which of the following are regions where lymph nodes are near the body surface? a. Cervical region b. Axillary region c. Inguinal region d. All of the above | All of the above |
| What is lymph? a. Fluid that bathes the tissue cells b. Fluid that enters lymphatic vessels c. Absorbed fats and carbohydrates d. Leaked fluid from blood capillaries | Fluid that enters lymphatic vessels |
| Lymphatic capillaries & vessels contain valves, which are also found in what type of blood vessel? a. Vein b. Elastic artery c. Muscular artery d. Arteriole | Vein |
| Which body region drains lymph into the right lymphatic duct? a. Right lower limb b. Left lower limb c. Right upper limb d. Left upper limb | Right upper limb |
| A microorganism that may cause disease in humans is called a/an: a. Mast cell b. Antibody c. Macrophage d. Pathogen | Pathogen |
| B cells produce plasma cells which secrete __________ into the blood or other fluids. a. Antigens b. Pathogens c. Macrophages d. Antibodies | Antibodies |
| All the lymphoid tissue, except the thymus, is composed of this type of tissue. a. Dense regular CT b. Elastic CT c. Reticular CT d. Dense irregular CT | Reticular CT |
| Select the example of a primary lymphoid organ. a. Thymus b. Spleen c. Lymph node d. Appendix | Thymus |
| Where do B cells mature? a. Lymph nodes b. Red bone marrow c. Thymus d. Spleen | Red bone marrow |
| In which body region are lymph nodes densely clustered near the body surface? a. Femoral b. Antecubital c. Cervical d. Lumbar | Cervical |
| Which lymphoid organ cleanses lymph? a. Lymph node b. Thymus c. Lymphatic capillaries d. Spleen | Lymph node |
| What type of blood cells are found in lymph nodes? a. Red blood cells b. Platelets c. Eosinophils d. Lymphocytes | Lymphocytes |
| Which statement is correct regarding lymph node structure? a. More efferent than afferent b. More afferent than efferent c. Fewer efferent than afferent d. Fewer afferent than efferent | More afferent than efferent |
| What is the largest lymphoid organ that cleanses blood & recycles old RBCs? a. Thymus b. Appendix c. Lymph node d. Spleen | Spleen |
| Which region of the spleen is composed of mostly lymphocytes? a. White pulp b. Capsule c. Crypts d. Trabeculae | White pulp |
| What part of the spleen is the site of RBC destruction? a. White pulp b. Capsule c. Red pulp d. Trabeculae | Red pulp |
| ___________ are lymphoid tissues that guard entrances of the digestive & respiratory systems. a. Appendix b. Tonsils c. Thymus d. Spleen | Tonsils |
| Palatine, lingual, and pharyngeal are all examples of what lymphoid tissues? a. Appendix b. Thymus c. Lymph nodes d. Tonsils | Tonsils |
| Where are Peyer’s patches located? a. Wall of small intestine b. First part of large intestine c. Posterior end of oral cavity d. Entrance to nasopharynx | Wall of small intestine |
| Where is the appendix located? a. Wall of small intestine b. First part of large intestine c. Posterior end of oral cavity d. Entrance to nasopharynx | First part of large intestine |
| If the thymus failed to produce thymosins, the maturation of which lymphocytes would be affected? a. NK cells b. B cells c. T cells d. C cells | T cells |
| Which of the following correctly describes internal respiration? a. O₂ diffuses from tissue cells to blood b. CO₂ diffuses blood → lungs c. O₂ diffuses lungs → blood d. CO₂ diffuses tissue cells → blood | CO₂ diffuses tissue cells → blood |
| What cell structure filters & traps dust/debris in mucus? a. Cilia b. Flagella c. Microvilli d. Villi | Cilia |
| The walls of the alveoli are lined by: a. Loose CT b. Simple squamous epithelium c. Stratified squamous d. Hyaline cartilage | Simple squamous epithelium |
| The “throat,” shared for air & food: a. Trachea b. Esophagus c. Pharynx d. Larynx | Pharynx |
| “Voice box” and “windpipe” are: a. Larynx; trachea b. Pharynx; trachea c. Pharynx; larynx d. Trachea; larynx | Larynx; trachea |
| Structure that closes the larynx during swallowing: a. Thyroid cartilage b. Cricoid cartilage c. Epiglottis d. Uvula | Epiglottis |
| Tissue that keeps airway open in trachea & primary bronchi: a. Epithelium b. Smooth muscle c. Skeletal muscle d. Cartilage | Cartilage |
| Tissue that alters airway diameter in bronchioles: a. Epithelium b. Smooth muscle c. Skeletal muscle d. Cartilage | Smooth muscle |
| Where does gas exchange occur? a. Alveoli b. Bronchi c. Trachea d. Pharynx | Alveoli |
| Surfactant: a. Not found b. Acts as phagocytes c. Prevents alveolar collapse d. — | Prevents alveolar collapse |
| First event in quiet inspiration: a. Thoracic volume ↑ b. Intrapulmonary pressure ↓ c. Air flows in d. Diaphragm contracts | Diaphragm contracts |
| Forced expiration uses internal intercostals and: a. Diaphragm b. Abdominal muscles c. External intercostals d. Serratus anterior | Abdominal muscles |
| Total amount of exchangeable air: a. Vital capacity b. Tidal c. Total lung capacity d. Inspiratory reserve | Vital capacity |
| Oxygen is transported: a. Dissolved only b. Bound to Hb c. Bound to Hb + dissolved d. As carbonic acid | Bound to Hb + dissolved |
| Most CO₂ is transported as: a. Carbon monoxide b. Bicarbonate c. Hemoglobin d. Chloride | Bicarbonate |
| Respiratory rhythm controlled by: a. Cerebral cortex b. Thalamus c. Hypothalamus d. Medulla oblongata | Medulla oblongata |
| When arterial PCO₂ increases: a. pH increases b. Chemoreceptors inhibited c. Breathing decreases d. Central chemoreceptors excited | Central chemoreceptors excited |
| Blockage of trachea → blood pH: a. ↑ due to ↑CO₂ b. ↓ due to ↑CO₂ c. ↑ due to ↓CO₂ d. ↓ due to ↓CO₂ | ↓ due to ↑CO₂ |
| COPD disease destroying alveoli: a. Emphysema b. Cystic fibrosis c. Tuberculosis d. Pneumonia | Emphysema |
| Genetic disease with thick mucus: a. Tuberculosis b. Pneumonia c. Cystic fibrosis d. Emphysema | Cystic fibrosis |
| Which type of membrane lines the respiratory and digestive tract? a. Serous b. Cutaneous c. Synovial d. Mucous | Mucous |
| The glottis is: a. The passage from the nasal cavity to the pharynx b. The opening to the larynx c. A flap of elastic cartilage d. Part of the hard palate | The opening to the larynx |
| The nasal cavity, trachea, bronchi, & bronchioles are all lined by: a. Simple squamous epithelium b. Simple columnar epithelium c. Pseudostratified columnar epithelium d. Stratified squamous epithelium | Pseudostratified columnar epithelium |
| Which immune cells are found in the alveoli that help remove debris and microbes? a. Lymphocytes b. Eosinophils c. Macrophages d. T cells | Macrophages |
| The lungs are surrounded by _______ fibers to allow the lungs to recoil passively during exhalation. a. Muscle b. Elastic c. Neural d. Reticular | Elastic |
| What is the name of the membrane that covers the external surface of the lungs? a. Visceral pericardium b. Visceral peritoneum c. Parietal pleura d. Visceral pleura | Visceral pleura |
| The primary muscle for inhalation is the: a. Diaphragm b. Biceps femoris c. Abdominal muscles d. Internal intercostals | Diaphragm |
| Which of the following correctly describes external respiration? a. Oxygen diffuses from the tissue cells into the blood C. Oxygen diffuses from the lungs into the blood d. Carbon dioxide diffuses from the tissue cells into blood | Oxygen diffuses from the lungs into the blood |
| The ability of the lungs to stretch/expand is called: a. Pleurisy b. Recoil c. Lung compliance d. Pneumothorax | Lung compliance |
| Hemoglobin would release its oxygen more readily when: a. ↑ PO2 of blood b. ↓ PO2 of blood c. ↓ PCO2 of blood d. Normal blood pH | ↓ PO2 of blood |
| What part of the brain bypasses medullary centers to voluntarily control breathing? a. Pons b. Thalamus c. Corpus callosum d. Cerebral cortex | Cerebral cortex |
| Which of the following is TRUE regarding pressure & volume changes with pulmonary ventilation? a. During inhalation, thoracic V ↑, and P inside ↓. b. During inhalation, thoracic V ↑, and P inside ↑. c. During exhalation, thoracic V ↑, and P inside ↑ | During inhalation, thoracic volume ↑, and pressure inside ↓. |
| The amount of air that can be forcefully inhaled after a normal TV inspiration is called: a. Tidal volume b. Residual volume c. Expiratory reserve volume d. Inspiratory reserve volume | Inspiratory reserve volume |
| The amount of air that can be forcefully exhaled after a normal TV expiration is called: a. Tidal volume b. Residual volume c. Expiratory reserve volume d. Inspiratory reserve volume | Expiratory reserve volume |
| The amount of air inhaled or exhaled with each breath under resting conditions is called: a. Tidal volume b. Residual volume c. Expiratory reserve volume d. Inspiratory reserve volume | Tidal volume |
| The amount of air remaining in the lungs after a forced expiration is called: a. Tidal volume b. Residual volume c. Expiratory reserve volume d. Inspiratory reserve volume | Residual volume |
| An inflamed pleural membrane, which can cause stabbing pain with each breath, is called: a. Pleurisy b. Surfactant c. Myocardium infarction d. Laryngitis | Pleurisy |
| Infant respiratory distress syndrome (IRDS) occurs when fetal lungs don’t produce adequate amounts of ____________. It’s common in premature babies. a. Water b. Lung tissue c. Surfactant d. Myelin | Surfactant |
| ________ constrict the airway, whereas ________ dilates the airways. a. Epinephrine; histamine b. Histamine; epinephrine c. Adrenaline; histamine d. Norepinephrine; histamine | Histamine; epinephrine |
| The presence of air in the pleural cavity because of a chest wound is called: a. Hemothorax b. Atelectasis c. Pleurisy d. Pneumothorax | Pneumothorax |
| Hyperpnea is described as: a. Increase CO2 in blood b. Increase O2 in blood c. Increase ventilation d. Increase salt content in blood | Increase ventilation |
| Select the event that occurs during quiet expiration. a. The external intercostal muscles contract to decrease the lung volume b. The dome-shaped diaphragm rises as the inspiratory muscles relax | The dome-shaped diaphragm rises as the inspiratory muscles relax |
| Movement of digestive material in one direction is called _________, which is the function of the _________ in the digestive tract? a. Peristalsis; muscularis externa b. Peristalsis; mucosa c. Segmentation; muscularis externa d. Excretion; submucosa | Peristalsis; muscularis externa |
| Which process consists of mixing digestive material with secretions but does not push materials in any one direction? a. Defecation b. Peristalsis c. Reverse peristalsis d. Segmentation | Segmentation |
| HCl is found in the _________, which causes it to have a pH around 1-2? a. Mouth b. Stomach c. Small intestine d. Large intestine | Stomach |
| The ________ surrounding the digestive organs. a. Visceral pericardium b. Visceral peritoneum c. Visceral pleura | Visceral peritoneum |
| Which sphincter encircles the anus, is composed of skeletal muscle, and is under voluntary control? a. Lower esophageal sphincter b. Ileocecal sphincter c. Internal anal sphincter d. External anal sphincter | External anal sphincter |
| A decrease in the amount of ________ from the liver and/or gall bladder would decrease the amount of fats digested and absorbed. a. Amylase b. Pepsin c. Bile d. Protease | Bile |
| Which digestive enzyme, produced by the pancreas, breaks down lipids/triglycerides into free fatty acids and glycerol? a. Amylase b. Lipase c. Pepsin d. Trypsin | Lipase |
| The digestion of which nutrient would be affected by damage to the salivary gland? a. Carbohydrate b. Lipid c. Protein d. Nucleic acid | Carbohydrate |
| Movement of nutrients/electrolytes/vitamins/H₂O across digestive epithelium → blood: a. Absorption b. Digestion c. Elimination d. Secretion | Absorption |
| Structure connecting pharynx to stomach: a. Larynx b. Esophagus c. Small intestine d. Rectum | Esophagus |
| Oral cavity, pharynx, esophagus, anus lined by: a. Simple squamous b. Simple columnar c. Pseudostratified d. Stratified squamous | Stratified squamous |
| Layer responsible for peristalsis & segmentation: a. Visceral peritoneum b. Mucosa c. Muscularis externa d. Submucosa | Muscularis externa |
| One-direction movement of digestive material: a. Segmentation b. Osmosis c. Peristalsis d. Excretion | Peristalsis |
| Sphincter preventing stomach contents entering esophagus: a. Pyloric b. Lower esophageal (LES) c. Ileocecal d. External anal | Lower esophageal (LES) |
| Disease from weak LES → acid in esophagus: a. Celiac b. Hepatitis c. Colitis d. GERD | GERD |
| Stomach folds allowing expansion: a. Rugae b. Bolus c. Chyme d. Villi | Rugae |
| Stomach enzyme that digests proteins: a. Lipase b. Amylase c. Nuclease d. Pepsin | Pepsin |
| Nutrient absorption occurs only in: a. Mouth b. Stomach c. Small intestine d. Large intestine | Small intestine |
| Pancreas, liver, gallbladder secretions enter: a. Jejunum b. Duodenum c. Ileum d. Cecum | Duodenum |
| Structure increasing surface area in small intestine: a. Flagella b. Rugae c. Cilia d. Microvilli/villi | Microvilli/villi |
| Function of large intestine: a. Reabsorption of water & formation of feces b. Chemical digestion c. Hormone production d. Nutrient absorption | Reabsorption of water & formation of feces |
| Sphincter at anus under voluntary control: a. Internal anal b. External anal c. Lower esophageal d. Ileocecal | External anal |
| Accessory organs containing amylase: a. Liver & pancreas b. Liver & gallbladder c. Pancreas & salivary glands d. Salivary glands & liver | Pancreas & salivary glands |
| Purpose of pancreatic buffers in duodenum: a. Digest carbs b. Activate pepsinogen c. Make bile d. Neutralize acid | Neutralize acid |
| Decrease in ________ reduces fat digestion: a. Amylase b. Pepsin c. Bile d. Protease | Bile |
| Nutrient transported by lacteals: a. Lipid b. Glucose c. Amino acid d. Nucleic acid | Lipid |
| Vitamin needed for blood clotting: a. Vitamin A b. Vitamin K c. Vitamin C d. Vitamin B | Vitamin K |
| Which fat-soluble vitamin is important for calcium absorption? a. Vitamin A b. Vitamin B c. Vitamin C d. Vitamin D | Vitamin D |
| Which water-soluble vitamin promotes iron absorption? a. Vitamin A b. Vitamin B c. Vitamin C d. Vitamin K | Vitamin C |
| Which fat-soluble vitamin is important for vision? a. Vitamin A b. Vitamin B c. Vitamin C d. Vitamin D | Vitamin A |
| Intrinsic factor is needed for absorption of: a. Vitamin B12 b. Vitamin K c. Vitamin C d. Vitamin D | Vitamin B12 |