The utricle and saccule contain the sensory receptors associated with the sense of
dynamic equilibrium.
Indicate whether the statement is true or false
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Question 2) The part of the brain that is overactive in post traumatic stress disorder is the
A) hippocampus. B) thalamus.
C) amygdala. D) brainstem.
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Question 3) What is the substance in tea that binds iron, reducing the amount absorbed?
A) Tannic acid B) Ascorbic acid
C) Caffeine D) Folic acid
(
Question 4) In the initiation of muscle fiber contraction, calcium ions bind to tropomyosin, exposing
active sites on actin for cross-bridge formation.
Indicate whether the statement is true or false
(
Question 5) A transplant recipient's body rejects a transplanted organ because her ______ does not
match that of the donor closely enough.
A) cytokine profile B) mononuclear phagocytic system
C) antibody response D) major histocompatibility complex
(
Question 6) Which of the following helps return blood to the heart?
A) Positive intrathoracic pressure B) Contracting skeletal muscles
C) Capillary action D) Valves in the arteries
(
Question 7) Which of the following drinks reduces the amount of iron absorbed from food?
A) Wine B) Tea C) Coffee D) Milk
(
Question 8) A traumatic brain injury (TBI) results from
A) an open head wound. B) an infection.
C) mechanical force. D) poisoning.
(
Question 9) A motor neuron and the muscle fibers that it controls constitute a motor unit.
Indicate whether the statement is true or false
(
Question 10) Hormones from the adrenal medulla increase
A) heart rate. B) all of the above.
C) breathing rate. D) blood pressure.
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