Question 1 of 32
Some of the hormones produced by the anterior pituitary have an effect on other glands. Which of the following does not?
C. growth hormone
E. gonadotropic hormone
Question 2 of 32
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
Question 3 of 32
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
Question 4 of 32
The thyroid gland is located
Question 5 of 32
Which pancreatic hormone stimulates the uptake of glucose by cells?
Question 6 of 32
Which of the following statements is not true concerning the hypothalamus?
Question 7 of 32
What is the function of melatonin?
A.regulate blood glucose levels
B.regulate blood calcium levels
C.aid in the differentiation of T lymphocytes
D.control the daily sleep-wake cycle
E.control the color of the skin
Question 8 of 32
Which of the following is not produced by the adrenal glands?
Question 9 of 32
What does being overweight have to do with infertility in women?
Question 10 of 32
Menstruation occurs during what days of the uterine cycle?
Question 11 of 32
During implantation, the zygote can be found
Question 12 of 32
Where does fertilization of the egg normally occur?
Question 13 of 32
Which of the following is a protist that causes an STD?
Which of the following is not part of the male reproductive system?
Question 15 of 32
Meiosis is to gametes as fertilization is to
Question 16 of 32
The adhering follicular cells that surround the egg are called the
Question 17 of 32
The umbilical arteries carry
Question 18 of 32
When cells take on specific structure and function, this is called
Question 19 of 32
Which of the following gives the correct order of layers the sperm crosses when entering the egg?
A.corona radiata, zona pellucida, oocyte plasma membrane
B.zona pellucida, oocyte plasma membrane, corona radiata
C.oocyte plasma membrane, corona radiata, zona pellucida
D.corona radiata, oocyyte plasma membrane, zona pellucida
E.zona pellucida, corona radiata, oocyte plasma membrane
Question 20 of 32
Which of the following does not occur prior to or during stage 1 of labor?
E.dislodging of the placenta
Question 21 of 32
Which of the following occurs during the embryonic stage of development?
Question 22 of 32
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
Question 23 of 32
The channels that provide for the movement of potassium in the resting neuron are _______.
A.leakage and chemically gated
Question 24 of 32
The period of time when the neuron is totally insensitive to further stimulation and cannot generate another action potential is
A.relative refractory period
C.absolute refractory period
Question 25 of 32
During the absolute refractory period, a neuron would need to be depolarized by _____ mV before another action potential could be generated.
D.Another action potential cannot be generated
Question 26 of 32
The minimum voltage that is required to generate an action potential is called the _______.
Question 27 of 32
When measuring refractory periods, as the interval between stimuli decreases, the depolarization needed to generate the second action potential:
B.stays the same
Question 28 of 32
What effect did decreasing the extracellular sodium have on the resting membrane potential?
Question 29 of 32
What is the major cation found inside the typical nerve cell at rest?
Part 5 of 6 -
Question 30 of 32
Define the term "threshold."
Question 31 of 32
Briefly explain why an action potential cannot be initiated during the absolute refractory period.