UMKC BIO 109 EXAM 4 STUDY GUIDE
QUESTIONS WITH CORRECT
ANSWERS
Action potentials move along axons - ANSWER-more rapidly in myelinated than in
non-myelinated axons
Which of the following hormones undergoes positive feedback during labor? -
ANSWER-oxytocin
The observation that the acetylcholine released into the junction between a motor
neuron and a skeletal muscle binds to a sodium channel and opens it is an example
of a - ANSWER-ligand-gated sodium channel
Postsynaptic potentials - ANSWER-A. directly result from the opening of voltage-
gated ion channels
B. may be depolarizing or hyperpolarizing
C. may be summed
Assume that a single IPSP has a negative magnitude of - 0.5 mV at the axon hillock,
and that a single EPSP has a positive magnitude of + 0.5 mV. For a neuron with
initial membrane potential is -70 mV, the net effect of the simultaneous arrival of 2
IPSPs and 6 EPSPs would be to move the membrane potential to - ANSWER--68
mV
Which of the following is a direct result of depolarizing the presynaptic membrane of
an axon terminal? - ANSWER-Voltage-gated calcium channels in the membrane
open.
Which of the following activities would be associated with the sympathetic division of
the nervous system? - ANSWER-fight-or-flight response
The motor (efferent) part of the autonomic nervous system - ANSWER-functions in
the control of smooth and cardiac muscle
Which of the following structures or regions is INCORRECTLY paired with its
function? - ANSWER-medulla oblongata - control of skeletal muscle contraction
The motor cortex is located in which part of the nervous system? - ANSWER-
cerebrum
Which of the following describes the functional controls of Wernicke's area? -
ANSWER-It is active when speech is heard and comprehended
Short-term memory information processing usually causes changes in the -
ANSWER-hippocampus
, In long-term potentiation, calcium entry into the post synaptic cell through NMDA
receptors leads to the insertion of ______ into the post synaptic membrane. -
ANSWER-stored AMPA receptors
If blood glucose levels were to
fall below 90 mg/100 ml you would expect levels of the
hormone ________________ to increase and that of ________________ to fall -
ANSWER-glucagon, insulin
Which of the following statements concerning type II diabetes is TRUE ? - ANSWER-
Excess body weight and lack of exercise increase the risk of developing the disease.
What do Wernicke's and Broca's regions of the brain affect? - ANSWER-speech
If someone said to you that a particular hormone utilizes a cell surface receptor in its
signal transduction pathway, you would know that the hormone - ANSWER-is water
soluble
Steroid and peptide hormones typically have in common _____. - ANSWER-their
requirement for travel through the bloodstream
Which of the following statements comparing water-soluble and lipid-soluble
hormones is False? - ANSWER-Only lipid-soluble hormones bind to a receptor
protein to initiate their response.
Which of the following hormones has a nontropic effect only - ANSWER-prolactin
People who suffer from inadequate iodine in the diet are unable to produce sufficient
levels of this hormone to provide negative feedback on the hypothalamus and
anterior pituitary. - ANSWER-thyroid hormone
Metamorphosis in the caterpillar to a butterfly is determined by - ANSWER-low JH
levels
A disease that destroys the adrenal cortex should lead to an increase in the plasma
levels of _____. - ANSWER-adrenocorticotropic hormone (ACTH)
Asexual reproduction results in greater reproductive success than does sexual
reproduction when _____. - ANSWER-species are in stable and favorable
environments
Which of the following statements comparing spermatogenesis and oogenesis is
(are) FALSE? - ANSWER-Oogenesis can produce mature eggs in a continuous
sequence, whereas spermatogenesis has long interruptions.
In the male normal spermatogenesis requires - ANSWER-A. FSH
B. LH
C. testosterone
QUESTIONS WITH CORRECT
ANSWERS
Action potentials move along axons - ANSWER-more rapidly in myelinated than in
non-myelinated axons
Which of the following hormones undergoes positive feedback during labor? -
ANSWER-oxytocin
The observation that the acetylcholine released into the junction between a motor
neuron and a skeletal muscle binds to a sodium channel and opens it is an example
of a - ANSWER-ligand-gated sodium channel
Postsynaptic potentials - ANSWER-A. directly result from the opening of voltage-
gated ion channels
B. may be depolarizing or hyperpolarizing
C. may be summed
Assume that a single IPSP has a negative magnitude of - 0.5 mV at the axon hillock,
and that a single EPSP has a positive magnitude of + 0.5 mV. For a neuron with
initial membrane potential is -70 mV, the net effect of the simultaneous arrival of 2
IPSPs and 6 EPSPs would be to move the membrane potential to - ANSWER--68
mV
Which of the following is a direct result of depolarizing the presynaptic membrane of
an axon terminal? - ANSWER-Voltage-gated calcium channels in the membrane
open.
Which of the following activities would be associated with the sympathetic division of
the nervous system? - ANSWER-fight-or-flight response
The motor (efferent) part of the autonomic nervous system - ANSWER-functions in
the control of smooth and cardiac muscle
Which of the following structures or regions is INCORRECTLY paired with its
function? - ANSWER-medulla oblongata - control of skeletal muscle contraction
The motor cortex is located in which part of the nervous system? - ANSWER-
cerebrum
Which of the following describes the functional controls of Wernicke's area? -
ANSWER-It is active when speech is heard and comprehended
Short-term memory information processing usually causes changes in the -
ANSWER-hippocampus
, In long-term potentiation, calcium entry into the post synaptic cell through NMDA
receptors leads to the insertion of ______ into the post synaptic membrane. -
ANSWER-stored AMPA receptors
If blood glucose levels were to
fall below 90 mg/100 ml you would expect levels of the
hormone ________________ to increase and that of ________________ to fall -
ANSWER-glucagon, insulin
Which of the following statements concerning type II diabetes is TRUE ? - ANSWER-
Excess body weight and lack of exercise increase the risk of developing the disease.
What do Wernicke's and Broca's regions of the brain affect? - ANSWER-speech
If someone said to you that a particular hormone utilizes a cell surface receptor in its
signal transduction pathway, you would know that the hormone - ANSWER-is water
soluble
Steroid and peptide hormones typically have in common _____. - ANSWER-their
requirement for travel through the bloodstream
Which of the following statements comparing water-soluble and lipid-soluble
hormones is False? - ANSWER-Only lipid-soluble hormones bind to a receptor
protein to initiate their response.
Which of the following hormones has a nontropic effect only - ANSWER-prolactin
People who suffer from inadequate iodine in the diet are unable to produce sufficient
levels of this hormone to provide negative feedback on the hypothalamus and
anterior pituitary. - ANSWER-thyroid hormone
Metamorphosis in the caterpillar to a butterfly is determined by - ANSWER-low JH
levels
A disease that destroys the adrenal cortex should lead to an increase in the plasma
levels of _____. - ANSWER-adrenocorticotropic hormone (ACTH)
Asexual reproduction results in greater reproductive success than does sexual
reproduction when _____. - ANSWER-species are in stable and favorable
environments
Which of the following statements comparing spermatogenesis and oogenesis is
(are) FALSE? - ANSWER-Oogenesis can produce mature eggs in a continuous
sequence, whereas spermatogenesis has long interruptions.
In the male normal spermatogenesis requires - ANSWER-A. FSH
B. LH
C. testosterone
