Transcript HL 6.5 and H.1 Review questions

 During resting potential what is
the charge (negative or positive
or no charge/ neutral) inside of
the neuron cell.
$100 Answer Nervous System
Negative
Nervous System
The sodium-potassium pump of neurons pumps
A) Na+ and K+ into the cell.
B) Na+ and K+ out of the cell.
C) Na+ into the cell and K+ out of the cell.
D) Na+ out of the cell and K+ into the cell.
E) Na+ and K+ into the cell and H+ out of the cell
Answer from Nervous System
The sodium-potassium pump of neurons pumps
D) Na+ out of the cell and K+ into the cell.
Question from Nervous System
During an action potential, which of the
following changes occurs first?
A) Sodium gates open.
B) The sodium-potassium pump shuts down.
C) The sodium-potassium pump is activated.
D) Potassium gates close.
E) Potassium gates open.
F) Calcium channels opening
Answer from Nervous System
During an action potential, which of
the following changes occurs first?
A. Sodium Gates open
Question from Nervous System
Which of the following is the correct sequence for
transmission of an impulse at a synapse?
1. Neurotransmitter binds with receptors
associated with the postsynaptic membrane.
2.Ca2+ ions rush into neuron's cytoplasm from the
synaptic cleft.
3. Action potential depolarizes the pre-synaptic
terminal membrane.
4. Sodium ion channels open in the postsynaptic
membrane.
5. Synaptic vesicles release neurotransmitter into
the synaptic cleft.
Answer from Nervous System
3, 2, 5, 1, 4
Question Nervous System
Neurotransmitters are released
from presynaptic membrane into
the synaptic cleft/ gap by which
transport mechanism?
Answer Nervous System
EXCOCYTOSIS
Question from Homeostasis
Which cells from which organ
secrete insulin?
$100 Answer from Homeostasis
Beta-Cells in the pancreas
Question from Homeostasis
Identify two things that
happens to skin in hot
external conditions and
describe how that helps
regulate body temperature
Answer from Homeostasis
Sweat glands in skin releases sweat, this
cools skin through evaporation.
Blood vessels near skin dilate (get bigger)
helps remove heat from blood via the skin.
Hair erector muscles relax and thus hair
lies flat against skin, this increase
convection and thus loss of heat.
Homeostasis
Which diagram represents a Skin in
cold temperature and State how
you can tell.
Answer from Homeostasis
Condition 1, b/c blood vessels are
constricted and sweat gland are
not producing sweat
Question from Homeostasis
Explain three things that happen in
your body when you are fasting/
have not eaten for many hours.
Answer from Homeostasis
1. Blood glucose drops
2. Alpha cells in Pancreas release glucagon
into blood.
3. Glucagon goes to liver to breakdown
glycogen to glucose.
4. Blood glucose increases to normal
Question from Homeostasis
State two differences between
type 1 and type 2 diabetes.
Answer from Homeostasis
Type 1 Diabetes
Type II Diabetes
Onset is usually during childhood
B-cells don’t produced insulin
Onset is AFTER childhood
Target cells are insensitive to
insulin
Insulin injections are not needed.
Insulin injections are used to
control glucose
Diet cannot by itself control
condition
Low carbohydrate diet usually
control the condition
 Identify two differences between Steroid & Peptide
Hormones (2)
Steroid
Hormones
Peptide Hormone
1. Enter inside cell and nucleus
1. Bind to a receptor on the
outside of a cell membrane
2. steroid hormones interact
directly with genes
2. protein hormones cause release
of secondary messenger in cell;
3. steroid hormones control
whether or not particular
enzymes or proteins are
synthesized via DNA
transcription and translation
3. whereas protein hormones
change the cell’s activity
usually by activating or
inhibiting enzymes;
 Identify the part of the human system that is
monitoring core body temperature
Hypothalamus
 Identify the part of the body that is
monitoring blood glucose levels
Pancreas
 Identify one Peptide hormone and one
steroid hormone
Types of Hormones
Steroids
Estrogen
Progesterone
Testosterone
Peptide
Insulin
ADH
LH
FSH
Identify the part of the
Human System that monitors
solute concentration in blood
plasma.
Osmoreceptor cells in the
HYPOTHALAMUS.
 Identify the hormone that is released
when the solute concentration in the
blood plasma is high.
Antidiuretic Hormone
(ADH)
Which lobe of the pituitary releases
ADH?
 Neurosecretory Cells secrete ADH
into the blood stream via the
POSTERIOR PITUITARY.
The ADH hormone affects which
organ???
The Collecting Ducts in
the Kidneys.
What is the affect of ADH on the
collecting ducts of the Kidneys?
What is the affect of ADH on the
collecting ducts of the Kidneys?
 ADH stimulates the cells of the collecting ducts to re-absorb
water from the filtrate/ urine so it can go back into the
blood plasma.