Which organ does not produce steroid hormones?
A.
pineal gland
B.
adrenal cortex
C.
ovaries
D.
testes
Which of the following is not an endocrine gland?
A.
dudodenum
B.
pituitary
C.
adrenal
D.
pineal
E.
thymus
Which of the following is a feature of an endocrine gland?
A.
secretes a hormone directly into the bloodstream
B.
secretes a hormone into a gland or duct
C.
the product of these glands is carried into the lumen of an organ
D.
characterized by the salivary glands
E.
they do not respond to a negative feedback system
Which of the following is the basis for steroid hormones?
A.
cholesterol
B.
peptides
C.
proteins
D.
glycoproteins
E.
modified amino acids
Which of the following statements is not true concerning the hypothalamus?
A.
The hypothalamus acts as the link between the nervous and endocrine systems.
B.
The hypothalamus regulates the internal environment of the body.
C.
The hypothalamus communicates with the somatic nervous system.
D.
The hypothalamus controls the glandular secretions of the pituitary gland.
E.
The hypothalamus produces antidiuretic hormone and oxytocin.
Why is the pancreas both an endocrine and an exocrine gland
A.
because it produces both a neurotransmitter and a hormone
B.
because it produces more than one hormone
C.because it produces at least one hormone that is delivered through a duct and one that is delivered to the bloodstream
D.
because it has an outer cortex and an inner medulla
E.
because it is located within the abdominal cavity with ties to the gastrointestinal system
Which system does the hypothalamus belong to?
A.
the nervous system
B.
the endocrine system
C.
both the nervous and the endocrine systems
D.
reproductive system
E.
cardiovascular system
How are the posterior pituitary and anterior pituitary similar?
A.
Both are controlled by the hypothalamus.
B.
Both produce three or more hormones.
C.
Both are connected to the hypothalamus via a portal system.
D.
Both produce releasing and inhibiting hormones.
E.
Both produce hormones that control other glands.
What does being overweight have to do with infertility in women?
A.
Leptin levels are higher which impacts GnRH and FSH.
B.
The oviducts are blocked.
C.
Uterine tissue is located outside of the uterus causing pain and structural abnormalities.
D.
Follicles are larger than normal and many mature at one time.
E.
The uterus is displaced and the zygote has difficulty implanting.
In order to be considered infertile, how long must a couple go without achieving pregnancy despite regular unprotected intercourse?
A.
one year
B.
six months
C.
3 years
D.
twelve weeks
E.
thirty days
During IVF, where does conception occur?
A.
in the vagina
B.
in the uterus
C.
in the oviducts
D.
in the laboratory
E.
in the fimbr
Which of the following parts of the female reproductive system is not present in pairs?
A.
uterus
B.
ovary
C.
oviduct
D.
fimbriae
E.
uterine tube
Which layer of the endometrium is the functional layer and what does it do?
A.
the innermost layer, basal layer of reproducing cells
B.
the innermost layer, grows in thickness to accommodate the pregnancy
C.
the outermost layer, basal layer of reproducing cells
D.
the outermost layer, grows in thickness to accommodate the pregnancy
E.
the middle layer is shed frequently to maintain a healthy lining for implantation
Which of the following forms of birth control is a small piece of molded plastic that does not allow the fertilized embryo to implant?
A.
diaphragm
B.
cervical cap
C.
intrauterine device
D.
cervical shield
E.
female condom
Which of the following is not part of the male reproductive system?
A.
testes
B.
bladder
C.
epididymides
D.
prostate gland
E.
urethra
Embryonic development begins with
A.
fertilization.
B.
the first cell division.
C.
the development of the blastocyst.
D.
implantation.
E.
gastrulation.
The _______ is the first embryonic membrane to appear, and it is the first site of ___________.
A.
amnion, umbilical cord formation
B.
yolk sac, placenta development
C.
chorion, neural system development
D.
allantois, amniotic fluid formation
E.
yolk sac, blood cell formation
The umbilical arteries carry
A.
oxygen-rich blood to the developing fetus.
B.
oxygen-rich blood to the placenta.
C.
oxygen-poor blood to the developing fetus.
D.
oxygen-poor blood to the placenta.
E.
oxygen-rich blood to the mother.
Which of the following is not derived from the endoderm?
A.
epithelial lining of digestive tract
B.
epithelial lining of respiratory tract
C.
glands of the digestive tract
D.
lining of the urinary bladder
E.
urinary system
Which of the following does not occur prior to or during stage 1 of labor?
A.
bloody show
B.
effacement
C.
uterine contractions
D.
breaking water
The adhering follicular cells that surround the egg are called the
A.
pronuclei.
B.
zona pellucida.
C.
corona radiata.
D.
cortical granule cells.
E.
outer cell mass.
Which of these is associated with pre-embryonic development?
A.
morula
B.
embryonic disk
C.
gastrulation
D.
primary germ layers
E.
formation of the umbilical cord
How did increasing the stimulus voltage in the simulation affect the action potential?
A.
a decrease in the rate of propagation of the action potential
B.
an increase in the rate of propagation of the action potential
C.
an increase in the size of the action potential
D.
no change to the action potential
The period of time when the neuron is totally insensitive to further stimulation and cannot generate another action potential is
A.
membrane potential
B.
repolarization
C.
absolute refractory period
D.
relative refractory period
Iftherestingmembranepotentialofaneuronis-70mVandthethresholdvoltageofthatneuron -50 mV, then the neuron must be depolarized by a minimum of _____ mV before an action potential is generated.
A.
10 mV B.
15 mV C.
20 mV D.
30 mV
Why does the threshold increase when the interval between the stimuli decreases?
A.
Calcium is flowing out the cell.
B.
Sodium is flowing out of the cell.
C.
Some sodium channels have been inactivated and cannot be reopened immediately.
D.
Potassium is flowing into the cell.
The minimum voltage that is required to generate an action potential is called the _______.
A.
trigger voltage
B.
propagation voltage
C.
depolarization voltage
D.
threshold voltage
What effect did increasing the extracellular potassium have on the resting membrane potential?
A.
The resting membrane potential became less negative.
B.
The resting membrane potential did not change.
C.
The resting membrane potential became more negative.
D.
The resting membrane potential disappeared.
Duringtheabsoluterefractoryperiod,aneuronwouldneedtobedepolarizedby_____mVbefore another action potential could be generated.
A.
50 mV
B.
75 mV
C.
100 mV
D.
Another action potential cannot be generated
Briefly describe the intracellular and extracellular concentrations of sodium and potassium ions in a resting neuron.
Briefly explain why it is more difficult to initiate an action potential during the relative refractory period.
Attach your completed Lab Exercise 3, Activity 5: The Action Potential: Measuring Its Absolute and Relative Refractory Periods lab report (PEX-03-05_FirstnameLastname.pdf) as the answer to this question