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Question 1 of 32 3.0/ 3.0 Points

Some of the hormones produced by the anterior pituitary have an effect on other glands. Which of the following does not?

A.LH

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B.ACTH

C.growth hormone

D.TSH

E.gonadotropic hormone

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Question 2 of 32 3.0/ 3.0 Points

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

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Question 3 of 32 3.0/ 3.0 Points

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

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Question 4 of 32 3.0/ 3.0 Points

The thyroid gland is located

A.in the neck.

B.in the brain.

C.on top of the kidneys.

D.near the ovaries or testes.

E.near the small intestines.

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Question 5 of 32 3.0/ 3.0 Points

Which pancreatic hormone stimulates the uptake of glucose by cells?

A.insulin

B.glucagon

C.estradiol

D.epinephrine

E.cortisol

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Question 6 of 32 3.0/ 3.0 Points

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.

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Question 7 of 32 3.0/ 3.0 Points

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

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Question 8 of 32 3.0/ 3.0 Points

Which of the following is not produced by the adrenal glands?

A.epinephrine

B.norepinephrine

C.glucagon

D.glucocorticoids

E.mineralocorticoids

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Part 2 of 6 – 18.0/ 21.0 Points

Question 9 of 32 3.0/ 3.0 Points

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.

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Question 10 of 32 3.0/ 3.0 Points

Menstruation occurs during what days of the uterine cycle?

A.days 1-5

B.days 1-13

C.days 6-13

D.days 15-28

E.days 28-32

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Question 11 of 32 3.0/ 3.0 Points

During implantation, the zygote can be found

A.in the endometrium.

B.in the oviduct.

C.in the abdominal cavity.

D.in the labium majora.

E.in the labium minora.

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Question 12 of 32 3.0/ 3.0 Points

Where does fertilization of the egg normally occur?

A.ovary

B.abdominal cavity

C.fimbria

D.oviduct

E.vagina

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Question 13 of 32 3.0/ 3.0 Points

Which of the following is a protist that causes an STD?

A.Chlamydia trachomatis

B.Neisseria gonorrhoeae

C.Trichomonas vaginalis

D.Candida albicans

E.Gardnerella vaginosis

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Question 14 of 32 0.0/ 3.0 Points

Which of the following is not part of the male reproductive system?

A.testes

B.bladder

C.epididymides

D.prostate gland

E.urethra

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Question 15 of 32 3.0/ 3.0 Points

Meiosis is to gametes as fertilization is to

A.zygote.

B.chromosome.

C.egg.

D.sperm.

E.mitosis.

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Part 3 of 6 – 21.0/ 21.0 Points

Question 16 of 32 3.0/ 3.0 Points

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.

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Question 17 of 32 3.0/ 3.0 Points

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.

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Question 18 of 32 3.0/ 3.0 Points

When cells take on specific structure and function, this is called

A.cleavage.

B.growth.

C.morphogenesis.

D.differentiation.

E.fertilization.

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Question 19 of 32 3.0/ 3.0 Points

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

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Question 20 of 32 3.0/ 3.0 Points

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

E.dislodging of the placenta

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Question 21 of 32 3.0/ 3.0 Points

Which of the following occurs during the embryonic stage of development?

A.Chorion appears.

B.Nose, eyes, and ear become noticeable.

C.Testes descend into scrotum.

D.Heartbeat can be heard.

E.Fingernails appear.

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Question 22 of 32 3.0/ 3.0 Points

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

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Part 4 of 6 – 21.0/ 21.0 Points

Question 23 of 32 3.0/ 3.0 Points

The channels that provide for the movement of potassium in the resting neuron are _______.

A.leakage and chemically gated

B.leakage

C.chemically gated

D.voltage gated

Feedback: Correct!

Question 24 of 32 3.0/ 3.0 Points

The period of time when the neuron is totally insensitive to further stimulation and cannot generate another action potential is

A.relative refractory period

B.membrane potential

C.absolute refractory period

D.repolarization

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Question 25 of 32 3.0/ 3.0 Points

During the absolute refractory period, a neuron would need to be depolarized by _____ mV before another action potential could be generated.

A.50 mV

B.75 mV

C.100 mV

D.Another action potential cannot be generated

Feedback: Correct!

Question 26 of 32 3.0/ 3.0 Points

The minimum voltage that is required to generate an action potential is called the _______.

A.propagation voltage

B.depolarization voltage

C.trigger voltage

D.threshold voltage

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Question 27 of 32 3.0/ 3.0 Points

When measuring refractory periods, as the interval between stimuli decreases, the depolarization needed to generate the second action potential:

A.decreases

B.stays the same

C.increases

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Question 28 of 32 3.0/ 3.0 Points

What effect did decreasing the extracellular sodium have on the resting membrane potential?

A.The resting membrane potential disappeared.

B.The resting membrane potential became less negative.

C.Only a small change occurred, because the sodium channels were mostly open.

D.Only a small change occurred, because the resting neuron is not very permeable to sodium.

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Question 29 of 32 3.0/ 3.0 Points

What is the major cation found inside the the typical nerve cell at rest?

A.chloride

B.sodium

C.potassium

D.acetylcholine

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Part 5 of 6 –

Answer the following question in your own words without using any resources. Your answer should be written in complete sentences using correct grammar, spelling, and terminology.

Question 30 of 32

Define the term “threshold.”

The threshold voltage is the voltage at which you first observe an action potential.

Feedback: Learning Objective: Define threshold and action potential.

Please review Lab Exercise 3, Activity 3.

Question 31 of 32

Briefly explain why an action potential cannot be initiated during the absolute refractory period.

There arent enough ion channels available to respond. Na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potential

Feedback: Learning Objective: Explain why an action potential cannot be initiated during the absolute refractory period.

Please review Lab Exercise 3, Activity 5.

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