Corrected True/False: Mark T for true F for false on Response Sheet AND if you a
ID: 3523286 • Letter: C
Question
Corrected True/False: Mark T for true F for false on Response Sheet AND if you answer false write in a word or phrase which corrects the statement to True. The word or phrase that makes the statement correct must substitute for the bolded/underlined section of the original statement
22. The oxyhemoglobin dissociation curve is U – shaped
Oxygen dissociation becomes more difficult as body temperature increases
Capillaries adjust in diameter in response to local metabolic conditions
During inspiration the diaphragm moves upward
Cardiac muscle has a high anaerobic capacity
During exercise, compared to at rest, systolic BP increases with increasing workload and diastolic BP stays about the same
The rate pressure product is a good indicator of total body oxygen consumption
Explanation / Answer
22. The oxygen disso.........F ( is sigmoidal )
Oxygen dissociation becomes ... F ( easy) [ increased temperature shifts the curve to the right direction. Increased temperature denatures the bond between oxygen and hemoglobin]
Capillaries ...... T [ capillaries dilates and constrict in response to the local metabolites if there is a large number of metabolites it dilates the capillary if there is less than normal amount of local metabolites capillaries constricts]
During inspiration ....F ( downward ) [ during inspiration diaphragm contracts so it moves downward ]
Cardiac muscle has ....F (aerobic ) [Heart muscle are rich in oxygen supplied by coronary artery]
During exercise, compared to at rest..... T [ during exercise systolic pressure is raised due to sympathetic nerve activity for increase oxygen demand of the tissues, while diastolic pressure remain same, or sometimes decrease a little bit for vasodilatation due to local metabolites]
The rate pressure product....F (Myocardial oxygen consumption ) [ This is the product of blood pressure and heart beats per minute to determine the workload of heart or myocardial oxygen consumption, not total body oxygen consumption ]