Which division of the human nervous system carries signals to skeletal muscles?
motor system
Once the threshold potential is reached,
an action potential is inevitable
Which of the statement about resting potential is true?
The sodium-potassium pump contributes to the resting membrane potential
During transmission across a typical chemical synapse,
neurotransmitter molecules bind to receptors in the receiving cell's plasma membrane.
A physician friend of yours is telling you about a patient with a head injury who suddenly stopped breathing. Your friend explains that the bony rim was pressing against the breathing center. You guess that the "bony rim" (whatever that is) must have been
medulla oblongata and pons
Treatments for depression often include drugs that help correct imbalances in the levels of
serotonin
What part of a neuron carries signals toward the part of the cell that houses the nucleus?
dendrite
In all vertebrates, the brain consists of the
forebrain, midbrain, and hindbrain
One neurotransmitter associated with sleep, mood, attention, and learning is
serotonin
The simplest animals to display cephalization and centralization of the nervous system are
flatworms
The gap between transmitting and receiving neurons in a chemical synapse is known as the
synaptic cleft
You start to fall but then catch yourself, regaining your balance. Which of the following brain regions is responsible for the rapid coordination of the muscle activity that kept your from falling?
cerebellum
The signal that crosses a synapse is stopped when
the neurotransmitter is enzymatically broken down or transported back to the signaling cell.
When you are very nervous, perhaps before you must speak in front of your college class, you notice that your mouth is dry and your heart is racing, this is most likely due to stimulation by the
sympathetic division of your autonomic nervous system
Once an action potential is triggered, there is a
reversal of the membrane polarity with the interior of the cell becoming positively charged
Action potentials normally travel along an axon
away from the cell body
**Which of the following statements regarding the nervous system is false?
sensory neurons convey signals from the CNS to sensory receptors
Action potentials relay different intensities of info due to the
frequency of action potentials relative to the strength of the stimulus
The function of a sperm cells acrosome is to
carry enzymes that help the sperm penetrate the egg
Which of the following occurs during the process of labor?
positive feedback involving oxytocin and prostaglandins
When a chemical signal from a group of embryonic cells cause a different nearby group of cells to embark on a particular developmental course, the interaction between the two groups of cells is called
induction
Which of the following structures contributes to the structure of the placenta as well as completely surrounding the embryo
chorion
**What does apoptosis do in humans
form fingers and toes
Know advantages and disadvantages of sexual and asexual reproduction
look it up
Which of the following hormones stimulates the growth of an ovarian follicle?
FSH follicle stimulating hormone
Which of the following process dominates the third trimester of human development
rapid growth
Another term for gestation
pregnancy
Which of the following generates the ATP that is required for movement of the sperms tail
a mitochondrion in the neck and middle piece
Which of the following options correctly lists the three stages of labor in the order which they occur
dilation, expulsion, delivery of the placenta
The embryo implants in the ____ of the uterus
endometrium
Which of the following results from cleavage?
formation of more cells
Fertilization occurs where
top part of oviduct
When does the human blastocyst implant in the wall of the uterus
a week after conception
**Corpus lutum
look it up
Gastrulation- endoderm, mesoderm, ectoderm
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reproductive systems of F and M
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