Anatomy and Physiology

    Chemistry for Physiology
    A hypertonic solution is one which:
    “Hyper-” means greater than the tonicity (or osmolarity) inside a RBC.
    Author: rikazzz Comment
    Reproductive System
    What is the chromosome complement of a sperm?
    Sperm are haploid (have 23 chromosomes) so that when they fuse with the egg (also with 23 chromosomes), the zygote has 46 chromosomes. The X or Y chromosome of the sperm, in conjunction with the X of the egg, then determines the sex of the baby.
    Author: rikazzz Comment
    Chemistry for Physiology
    Which of the following defines an acid?
    This is a definition of an acid. All other choices are wrong statements.
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    Body Temperature, Energy and Heat Loss
    What factor does NOT affect the amount of heat lost from the human body by radiation?
    Body mass produces heat, but radiative losses are affected by the other three factors.
    Author: rikazzz Comment
    Body Temperature, Energy and Heat Loss
    What is a person’s metabolic rate defined as? The rate:
    Choice B refers to basal metabolic rate, which may be measured by oxygen consumption while at rest.
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    Cardiovascular System
    Which enzyme converts fibrinogen to fibrin?
    Thrombin is the enzyme. It is not present until prothrombinase converts prothrombin to thrombin.
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    Measurement, Errors, Data and Unit Conversion
    What is the “median” wage of these ten?
    The median is the middle number. Half of the ten numbers are larger than (or equal to) the median and half are smaller. The wages have been arranged in ascending order: the fifth is $500 and the sixth is also $500. So half of the numbers are $500 or less and half are $500 or more. The median is midway between these two numbers and is $500.
    Author: rikazzz Comment
    Endocrine System
    Which organ produces luteinising hormone?
    The anterior pituitary releases LH along with FSH.
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    Skeleton and Joints
    Which one of the following is a bone that is embedded within a tendon?
    Sesamoid refers to like a sesame seed. Many are normal parts of anatomy that ossify within tendons (patella, fabella, hallux sesamoid).
    Author: rikazzz Comment
    Nervous System
    Which of the lists of structures include all of the central nervous system?
    There are five distinct structures in the CNS. Autonomic nerves, motor and sensory neurones and special sense organs are not part of the CNS.
    Author: rikazzz Comment