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BIO 240 lecA test 1

Multiple Choice
Identify the choice that best completes the statement or answers the question.

b 1. Tiny finger-like projections in the small intestine taht increase surface area for absorption are
⦁ rugae c. alveoli
⦁ villi d. sphincter

d 2. Most CO2 in the blood
⦁ is carried by hemoglobin c. reacts to form cholesterol
⦁ is converted to O2 in the blood d. reacts with water to form carbonic acid

b 3. Longitudinal smooth muscle will cause the esophagus to
⦁ expand c. constrict
⦁ shorten d. lengthen

b 4. Chemical digestion first begins in the
⦁ liver c. small intestines
⦁ mouth d. stomach

a 5. The organ where the air and food passageways cross is the
⦁ pharynx c. esophagus
⦁ larynx d. sphincter

a_ 6. Neuropeptide Y is stimulated by the release of
⦁ ghrelin c. gastrin
⦁ cholecystokinin d. CHNOPS

a 7. Which contains mainly lymphatic tissue
⦁ tonsils c. salivary glands
⦁ pancreas d. colon

a 8. The hepatic duct and the cystic duct join to form the
⦁ common bile duct c. pancreatic duct
⦁ appendix d. cecum

a 9. Digested nutrients are carried to the liver by the
⦁ hepatic portal vein c. common bile duct
⦁ renal vein d. hepatic duct

 

a 10. When the diaphragm contracts
⦁ the thoracic floor bends downward, increasing the thoracic cavity volume
⦁ the thoracic floor bends upward, decreasing the thoracic cavity volume

⦁ the thoracic floor bends upward, increasing the thoracic cavity volume
⦁ the thoracic floor bends downward, decrasing he thoracic cavity volume

b 11.

 

The shift to the right of the curve most likely shows the effect on hemoglobin-O2 binding of
⦁ lower acidity levels c. higher O2 levels
⦁ higher CO2 levels d. higher pH levels

⦁ 12. Which doesn’t digest a carbohydrate
⦁ carboxypeptidase c. sucrase
⦁ lactase d. maltase

b 13. Food is prevented from going down the respiratory tract by the
a. frenulum c. uvula
b. epiglottis d. adenoids

d
14.
Most chemical digestion takes place in the
⦁ stomach c. large intestine
⦁ mouth d. small intestine

b
15.
When trypsin digests protein, you get
a. glucose c. amino acids
b. peptides d. fatty acids

a/d
16.
Urea and uric acid is produced by the liver as a result of
⦁ breaking down of amino acids c. converting fat to cholesterol
⦁ converting glucose to fat ( d. gluconeogenesis

⦁ 17. The digestive enzyme which works with HCl is
⦁ amylase c. lipase
⦁ pepsin d. trypsin

b 18. Most absorption of digested nutrients takes place in the
⦁ large intestine c. colon
⦁ small intestine d. stomach

 

a 19. Which is true?
⦁ the pO2 of the blood is lower than in the lung air spaces

c. the pCO2 in the blood is lower than in the lung air spaces

b. all are false d. pO2 in the blood is higher than in lung air spaces

a 20. Which is supported by c-shaped rings are cartilage?
⦁ trachea c. alveoli
⦁ villi d. nasal cavity

a 21. Mechanical digestion first occurs in the
⦁ mouth c. small intestine
⦁ stomach d. colon


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a 22. The hepatopancreatic ampulla is
⦁ where ducts from the liver, pancreas and gall bladder join
⦁ where most absorption of nutrients occurs

⦁ a duct in the liver

⦁ conducts nutrients from the small intestine to the liver

 

d 23. The external sphincter muscles of the anus is
⦁ is under voluntary control only c. made up of smooth muscle
⦁ is stimulated by gastrin d. are attached to the pelvis

d 24. A hormone secreted by stomach which increases stomach activity is
⦁ pepsin c. cholecystokinin
⦁ carboxypeptidase d. gastrin

d 25. Air is first filtered, warmed and moistened in the
⦁ alveoli c. mouth cavity
⦁ larynx d. nasal cavity

⦁ 26. Which contains mainly lymphatic tissue?
⦁ tonsils c. salivary glands
⦁ colon d. pancreas

⦁ 27. The swallowing reflex ends with
⦁ the tongue pusing backon the epiglottis c. the uvula pushing upward
⦁ initiation of peristalsis d. muscles of the pharynx contracting

a 28. The organ where the air and food passageways cross is the

⦁ pharynx c. larynx
⦁ sphincter d. esophagus

 

c 29. Expiration is caused by
⦁ muscles in the bronchi and bronchioles contract

c. Elastic recoil of the lungs and pleural tissue, causing the lung volume to decrease

b. peristalsis in the trachea d. diaphragm and rib muscle contract, expanding the thoracic cavity

c 30. The part of the respiratory center which increases the rhythm of breathing is
⦁ ventral respiratory group c. dorsal respiratory group
⦁ inferior respirator group d. superior respiratory group

b 31.

the S shape in the curve is caused by
⦁ as each heme group in hemoglobin bonds to O2, hemoglobin will release O2 more easily
⦁ as each heme group in hemoglobin bonds to O2, hemoglobin will bond to O2 more easily

⦁ as each heme group in hemoglobin bonds to O2, hemoglobin will bond to CO2 more easily
⦁ as each heme group in hemoglobin bonds to O2, hemoglobin will bond to CO2 more easily

b 32. Thin, moist, with lots of blood vessels describes

⦁ the common bile duct
⦁ respiratory membrane c.
d. the diaphragm the gall bladder

b33.Gas exchange occurs in the
⦁ villi
⦁ alveoli c.
d. bronchioles nasal cavity

b34.
Most chemical digestion occurs in the
a. large intestines c. stomach
b. small intestines d. mouth

a 35. The secondary bronchi
⦁ enter each lobe of the lungs c. have respiratory air sacs outpockets in
their walls

⦁ divide from the trachea and enter each lung
d. are lined by respiratory membrane

a 36. The hepatic duct and the cystic duct join to form the
⦁ common bile duct c. appendix
⦁ pancreatic duct d. cecum

d 37. The part of the brain responsible for the sensation of hunger?
⦁ cerebrum c. medulla
⦁ pons d. hypothalamus

d 38. Which organ has 3 layers of smooth muscle?
⦁ esophagus c. trachea
⦁ small intestine d. stomach

c 39. Most absorption of digested nutrients takes place in the
⦁ large intestine c. a)small intestine
⦁ mouth d. stomach

b 40. The function of bile is to
⦁ help fat be absorbed in the small intestines c. digest fat

⦁ breaks upfat into smaller fat droplets to increase surface area
d. help dissolve fat molecules in water

d 41. Olfactory epithelium is found in the
⦁ larynx c. pharynx
⦁ oral cavity d. nasal cavity

x 42. As the curve shifts to the right, hemoglobins ability to bond to O2 (a)lessens (b)strengthens

(c)remains the same
⦁ strengthens c. remains the same
⦁ lessens

d 43. Which first gets chemically digeste in the mouth?
⦁ protein c. glygogen
⦁ fats d. starch

d 44. respiratory membrane
⦁ lines the upper respiratory tract c. only allows o2 to enter

⦁ is found in different places throughout the body
d. is thin with many capillaries

b 45. Breathing rate is stimulated by

⦁ high pH c. higher O2 levels
⦁ higher CO2 levels d. lower CO2 levels

b 46. Which is lined by pseudostratified columnar mucous ciliated epithelium?
⦁ stomach c. bronchioles
⦁ trachea d. alveoli

c 47. Which is not an accessory organ of the digestive system?
a. gall bladder c. duodenum
b. liver d. salivary gland

a48.
Which is both an endocrine and exocrine gland
⦁ pancreas c. salivary gland
⦁ liver d. gall bladder

c49.

Food is prevented from backflowing into the nasal cavity by the
a. frenulum c. uvula
b. septum d. epiglottis

b50.
Which does not occur in the mouth ?
a. mechanical digestion c. ingestion
b. absorption d. chemical digestion

Matching

⦁ emulsifies fat i. enzyme that speed up digestion of protein
⦁ where water is absorbed j. contain the vocal cords
⦁ circular band of smooth muscle k. an accessory digestive organ
⦁ hormone produced by stomach wall l. its function is unknown
⦁ lymph vessel that transports fats m. muscular organ causes inspiration when it
contracts
⦁ their vibration produces sound n. reacts with food molecules in hydrolysis

⦁ fats and amino acids are converted to glucose
⦁ supported by c-shaped cartilage rings
o. rhythmic contractions that move food

f 51. gluconeogenesis
i 52. trypsin
k 53. salivary gland
a 54. bile
c 55. sphincter
e 56. lacteal
o 57. peristalsis
d 58. gastrin
l 59. appendix
f 60. vocal cords
j 61. larynx
b 62. colon
n 63. H2O
c 64. trachea

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