BIO 1201 Final Examination / Most Recent
Version with Well-Detailed Questions and
Comprehensive Answers / Get it 100%
Correct Answers / Already Rated A+
Which of the following is NOT an endocrine organ?
Hypothalamus, Ovary, Thyroid, Adrenal Glands
Hypothalamus
As a baby breastfeeds, more oxytocin is released by the mother's
posterior pituitary. This is an example of
feedback inhibition (positive)
Which gland releases hormones that help with the body's response to
stress?
Adrenal Gland
Which of the following correctly matches the hormone to its function?
Prolactin: milk production, Calcitonin: decreases levels of Ca2+ in the
blood, Progesterone: preparing and maintaining the uterus
When epinephrine binds to cardiac (heart) muscles cells, it speeds up
their contraction. When it binds to muscle cells of the small intestine,
it inhibits their contraction. Which of the following best accounts for
the fact that the same hormone can have different effects on the
muscle cells?
The two types of muscle cells have different signal transduction
pathways for epinephrine and thus have different cellular responses
What is the central nervous system?
Where integration takes place; this includes the brain and nerve cord
(spinal cord)
What is the periphal nervous system?
, the sensory and motor neurons that connect to the CNS, which
carries info in and out of the CNS, all the other nerves throughout the
body
How are sensory neurons, interneurons, and motor neurons
different?
Sensory neurons: transmit info about external stimuli such as light,
smell, touch
Interneurons: analyze and interpret info
Motor neurons: transmit signals to muscle cells, causing them to
contract
How is an electrical neuron signal different from a chemical neuron
signal?
Electrical: long distance, gap junctions
Chemical: short distance, use neurotransmitters
Where does a signal enter a neuron? Where does it exit?
Enters through the dendrite and exits through the synapse terminal
(axon)
What is meant by the term "resting potential"? What are the
concentrations of K+ and Na+ associated with this state?
Resting potential: the membrane potential of a neuron not sending
signals
-lots of K+ channels, fewer Na+ channels
-negative membrane potential
-neuron is not signaling
How do changes in membrane potential occur? What type of
membrane transport protein is associated with these changes?
occur bc neurons contain gated ion channels that open and close in
response to stimuli (ap)
-voltage gated ion channels
What needs to happen so that an action potential can be fired?
depolarization (sodium ions cause membrane potential to be less
negative)
What are the 5 stages of action potential firing and what is happening
in each?
Version with Well-Detailed Questions and
Comprehensive Answers / Get it 100%
Correct Answers / Already Rated A+
Which of the following is NOT an endocrine organ?
Hypothalamus, Ovary, Thyroid, Adrenal Glands
Hypothalamus
As a baby breastfeeds, more oxytocin is released by the mother's
posterior pituitary. This is an example of
feedback inhibition (positive)
Which gland releases hormones that help with the body's response to
stress?
Adrenal Gland
Which of the following correctly matches the hormone to its function?
Prolactin: milk production, Calcitonin: decreases levels of Ca2+ in the
blood, Progesterone: preparing and maintaining the uterus
When epinephrine binds to cardiac (heart) muscles cells, it speeds up
their contraction. When it binds to muscle cells of the small intestine,
it inhibits their contraction. Which of the following best accounts for
the fact that the same hormone can have different effects on the
muscle cells?
The two types of muscle cells have different signal transduction
pathways for epinephrine and thus have different cellular responses
What is the central nervous system?
Where integration takes place; this includes the brain and nerve cord
(spinal cord)
What is the periphal nervous system?
, the sensory and motor neurons that connect to the CNS, which
carries info in and out of the CNS, all the other nerves throughout the
body
How are sensory neurons, interneurons, and motor neurons
different?
Sensory neurons: transmit info about external stimuli such as light,
smell, touch
Interneurons: analyze and interpret info
Motor neurons: transmit signals to muscle cells, causing them to
contract
How is an electrical neuron signal different from a chemical neuron
signal?
Electrical: long distance, gap junctions
Chemical: short distance, use neurotransmitters
Where does a signal enter a neuron? Where does it exit?
Enters through the dendrite and exits through the synapse terminal
(axon)
What is meant by the term "resting potential"? What are the
concentrations of K+ and Na+ associated with this state?
Resting potential: the membrane potential of a neuron not sending
signals
-lots of K+ channels, fewer Na+ channels
-negative membrane potential
-neuron is not signaling
How do changes in membrane potential occur? What type of
membrane transport protein is associated with these changes?
occur bc neurons contain gated ion channels that open and close in
response to stimuli (ap)
-voltage gated ion channels
What needs to happen so that an action potential can be fired?
depolarization (sodium ions cause membrane potential to be less
negative)
What are the 5 stages of action potential firing and what is happening
in each?
