2012 Prac Flashcards
Which of the following would you expect to be most acidic (i.e. low pH)? a. pig stomach b. sheep rumen c. sheep reticulum d. sheep omasum e. sheep rumen and reticulum
a. pig stomach
Which of the following is both an endocrine and an exocrine organ? a. Heart b. Lungs c. Pancreas d. Kidney e. Spleen
c. Pancreas
The heart is covered by a membrane called the __________ .
pericardium
You place two dyes on an agar plate. Dye A has a molecular weight (MW) of 230 while Dye B has a MW of 320. Which of the following statements regarding the rate of flow of the dyes across the agar best describes what occurs? a. Dyes A and B move at the same rate. b. Dye A moves at a faster rate than Dye B. c. Dye B moves at a faster rate than Dye A. d. Dyes A and B will not move at all because the agar is not permeable. e. It is not possible to predict which dye would move faster from the information provided.
b. Dye A moves at a faster rate than Dye B.
In the PhysioEx simulation of facilitated diffusion, you built a membrane that held different numbers of ‘glucose carriers’ and recorded rates of glucose diffusion. The addition of NaCl to the glucose solution in one beaker ____________ the rate of glucose transport because ____________ .
e. Did not affect the / glucose carriers are specific to glucose
The retinaculum ____________________
acts as a sheath for tendons, retaining them in position
Consider a blood pressure cuff used on an arm to measure arterial pressure, according to the method described in your BMS107 laboratory manual. If the cuff pressure is HIGHER than the systolic blood pressure, which ONE of the following is a CORRECT statement? a. The radial pulse will be stronger because blood is trapped in the arm b. A radial pulse will not be felt in that arm c. Korotkoff sounds will not be heard because blood flow in that arm is laminar d. Blood flow in the arteries of that arm will be turbulent and only occur during some phases of the cardiac cycle e. Korotkoff sounds will be heard in that arm as heart valves slam shut during diastole
b. A radial pulse will not be felt in that arm
Three identical cylinders contain solutions of 20%, 40% and 80% glycerol (in water). A BMS107 student simultaneously drops a glass bead into each of the cylinders. Which ONE of the following statements is CORRECT? a. The presence of glycerol increases the likelihood of turbulent flow in the tubes b. All three beads will reach the bottom of the tube at the same time, because gravity is acting equally on all beads c. The 40% glycerol solution is less viscous than the 20% glycerol solution d. The bead in the 80% glycerol solution will read the bottom of the tube first e. The resistance to flow is lowest in the 20% glycerol solution
e. The resistance to flow is lowest in the 20% glycerol solution
Consider how gravity affects blood pressure in the human body. Which ONE of the following statements is CORRECT? a. In a person standing vertically, blood pressure is highest in the head b. Gravity does not contribute significantly to the blood pressure gradient of a person lying horizontally c. Gravity only acts on the body when it is standing vertically d. On average, systolic blood pressure is approximately 20 mm Hg higher when a person is standing upright, compared to the same person lying down e. In a person lying horizontally, the blood pressure is equal at the head, heart and feet
b. Gravity does not contribute significantly to the blood pressure gradient of a person lying horizontally
CORRECTLY identify normal values for the diastolic, central venous and systolic blood pressures (P) in a healthy human.
Diastolic P 80mm Hg, Central Venous P 7mm Hg, Systolic P 120mm Hg
- Which of the following statements best describes the importance of the cerebrospinal fluid within the subarachnoid space of the brain case. a. It keeps the brain cool b. It provides a lubricating function so that the brain can move around inside the skull c. It helps transport chemicals and hormones around the brain d. It helps prevent electrical information from leaking out of the brain e. It cushions the brain and protects it from sudden movements and impacts
e. It cushions the brain and protects it from sudden movements and impacts
What is the function of the pineal gland? a. It secretes the majority of hormones involved in homeostatic control b. It secretes melatonin which regulates circadian rhythms c. It secretes melanin which affects skin pigmentation d. It interacts with the optic chiasm to regulate circadian rhythms e. It is a vestigial remnant of a larger organ
b. It secretes melatonin which regulates circadian rhythms
In one of the sensory practical class exercises, student volunteers placed one hand in cold water and the other hand in hot water for about 1 minute, and then transferred both hands to lukewarm water. On transferring both hands into the lukewarm water, the temperature on each hand felt different. The observations from this exercise demonstrated of which ONE of the following? a. Cold receptors are much more sensitive to cold temperatures than hot receptors are to hot temperatures b. The sensitivity of hot and cold receptors was increased by the initial 1-minute immersion in hot and cold water c. Lukewarm temperature receptors were temporarily inactivated when the hands were placed in hot and cold water d. Hot and cold receptors adapted during the initial 1-minute immersion and had to re-adapt to the lukewarm temperature e. Each hand has receptors that detect only hot and cold and therefore each hand felt different when placed in lukewarm water
d. Hot and cold receptors adapted during the initial 1-minute immersion and had to re-adapt to the lukewarm temperature
In the mammalian eye, parasympathetic nervous activity is associated with which ONE of the following? a. Accommodation of the lens for viewing close objects and constriction of the pupils in response to light b. Accommodation of the lens for viewing distant objects and constriction of the pupils in response to light c. Accommodation of the pupils to light d. Accommodation of the pupils in response to dark e. Accommodation of the pupils for viewing distant objects
a. Accommodation of the lens for viewing close objects and constriction of the pupils in response to light
All 5 basic tastes can be detected across the entire surface of the human tongue but some regions are more sensitive to certain tastes. The tip of the tongue is most sensitive to which tastes?
Sweet, salty and umami
d. A and B
b. osmotic pressure would start to build up in the left hand beaker
b. 3 mM Left Right
c. B shows red blood cells that have shrunken by osmosis after being placed in 1.8% saline. Water has left the cells by osmosis and the red cells are said to be crenated
c. C shows simple columnar epithelium
d. This is a ciliated, simple columnar epithelium
Q13. C. Deep digital flexor
Q14. D. Hyaline cartilage
D
e.
Adaptation for flight, A
a. The image shows a fibrous union (suture line) between two areas of bone
c. Arrow C is the nucleus pulposus
c. Arrow C is an area composed of hyaline cartilage
Arrow A
- A
- E
d. 9
a. Violet is closest to “B”, has the shortest wave length, and undergoes the greatest refraction
a. Arrow A
e. This is an exocrine duct which will empty into the duodenum
c. axon Schwann cell nucleus myelin sheath
b. Arrow B
