Skip to main content

FCPS part 1 Medicine solved mcqs with explanation Q 15

By
Which of the followings is not caused by parasympathetic stimulation?
a) Micturation
b) Miosis
c) Increased GIT motility
d) Sweating


Correct Answer: d


Explanation:
Sweating is function of sympathetic stimulation rather than parasympathetic stimulation. In order to differentiate between parasympathetic & sympathetic effect and prevent any confusion, remember the following scenario.
You go out on a street and you are greeted to a fierce lion! In this situation you would want to:
  • Have your pupils fully dilated (mydriasis), so that you can see the maximum of the lion and be prepared for an attack.
  • Have you heart racing(tachycardia), so that when you start running your heart is able to meet the increased oxygen demand to the muscles
  • Stop your bowel and bladder movement (urinary retentions & decreased GI motility), because you definitely don’t want to go to bathroom right now!
  • Increase your metabolism and sweating for optimal temperature control so that you are not feeling cold when the lion bites you! (this is just an example to remember things)
Since you were met by a lion your response should be fright, fight or flight which is actually the sympathetic stuff. Everything opposite to this such as miosis, bradycardia, micturation & increased GI motility occur with parasympathetic stimulation.




Labels:

Comments

Post a Comment

Although every comment is appreciated, due to time limitations I might not be able to respond to every one. Comments are moderated and may take some time to appear. All spam comments will be deleted.

Popular posts from this blog

BIO-STATISTICS MCQs with Key

By
1. A study was conducted in America to find out the proportion of blacks and white Americans in California. This variable chosen is: a. Nominal b. Ordinal c. Continuous d. Discreet numerical e. Dichotomous Key: True: e 2. The median of the following data, is: 1,2,4,6,8,10,11,13 a. 6 b. 8 c. 7 d. 10 e. 9 Key: True: c 3. A household survey of 10 families was conducted by students of 4th year MBBS. In the collected data, the ages of heads of families were: 32, 34, 35, 36, 36, 42, 44, 46, 48, and 52. The mean age of heads of families is a. 36 b. 38.5 c. 40 d. 40.5 e. 42 Key: True: d 4. A nutritional research team followed serum levels of vitamin B12 in 120 children for three years to determine the association between cyanocobalamin deficiency and the subsequent risk of developing Megaloblastic anemia. The results were as follows: VITAMIN B12 LEVELS Mean 260 pg/mL Median 226 pg/mL Mode 194 pg/mL From the data, it can be concluded that this distributio...
6 comments
Read more

Epidemiology MCQs with key

By
1. While investigating a point source epidemic it was found that 120 students ate five different foods (meat burgers, fried fish, steak, rice and fruit salad). The relative risk was calculated for all those five foods. It was concluded that fish was not responsible for this epidemic. The relative risk of fish is: a. 0.7 b. 1.2 c. 1.7 d. 3.0 e. 7.0 Key: True: a In a prospective study of the relationship between oral contraceptive use and the subsequent risk of developing endometrial cancer, a cohort of 1000 women were followed for 5 years. The results were as follows: A 245 B 75 C 50 D 630 A + C = 295 B + D = 705 n = 1000 2. What is the incidence rate (absolute risk) of endometrial cancer among who didn’t use oral contraceptives? a. 630 / (50 + 630) b. 75 / (245 + 75) c. 50 / (50 + 630) d. 245 / (245 + 75) e. Insufficient data Key: True: c 50/(50 + 630) In a prospective study of the relationship between oral contraceptive use and the subsequent risk of de...
1 comment
Read more

Endocrinology MCQs Past papers

By
PART 1: 1.     Eosinophils in the islands of Langerhans suggest A.   insulinoma B.   newborn child of a diabetic mother (*) C.   maturity onset diabetes of the young D.   type I diabetes E.   type II diabetes, usual type 2.   Cotton wool patches on the diabetic retina are A.   amyloid deposits B.   ischemia areas (*) C.   protein deposits D.   retinal nicroseparations E.   thread-like vascular proliferations 3.   Multiple endocrine neoplasia type I features which island cell tumor? A.   gastrinoma (*) B.   glucagonoma C.   insulinoma D.   somatostatinoma E.   VIPoma 4.   Hyperglycemia in the "dawn phenomenon" is mediated by A.   cortisol B.   epinephrine C.   glucagon D.   growth hormone...
22 comments
Read more