Bio exam 4

As a reproductive endocrinologist, you are trying to help a couple pin-point some of their fertility issues. You obtain a sperm sample from the husband and immediately figure out what the issue is. Which of the following would be contributing to the couple's infertility?

in the female, LH targets ____ cells, which can be found in the ____. LH is also the hormone used to detect ___.

Which of the following channel types is INCORRECTLY matched with what opens it?

As pregnancy progresses into the second and third trimesters (but still before delivery), levels of which hormone(s) continue to increase?

which of the following would you find in the synaptic cleft of an alpha motor neuron and a muscle cell?

the peripheral nervous system is subdivided into an autonomic and a somatic nervous system. the three divisions of the autonomic nervous system are...

suppose you are studying a neuron from an alien with strange ions that contribute to its resting potentials and action potentials. How would you be able to figure out which ion plays the biggest role in the cell's resting membrane potential?

which of the following is FALSE regarding spermatogenesis and oogenesis?

you are studying the nervous system of a new kind of mammal, which you plan to name after yourself. as you study the nerves in this mammal, you notice that the propagation of an electrical signal from the brain to its target is extremely slow. Which of the following statements could best describe this finding?

In this same mammal, you are studying a synapse that's somewhere in the midbrain. how would you be able to tell if this synapse is excitatory or inhibitory?

which of the following is true regarding sensory receptors?

the corpus luteum in a pregnant female becomes the placenta

DIAGRAM. which of the following scenarios could result in the level of excitation observed in synapse C?

DIAGRAM. a patient of yours has serious ADHD and you prescribe Ritalin. which transition would you expect to see at dopamine-mediated synapses in this patient following an extended time on the medication.

DIAGRAM. Opiods...

Why does it make sense that estrogen carries out a negative feedback loop on the anterior pituitary hormones during the luteal phase?

During human gestation, rudimentary forms of all organs develop...

A skeletal muscle deprived of adequate ATP supplies will...

The two regulatory proteins involved in muscle contraction have several roles. Which of the following roles listed below is INCORRECTLY described?

Transducin...

I think if I went to a concert in this day and age, I would need serious ear plugs because of the intensity of the sound! what would be happening as my ears transduce the sound during this loud concert?

Smell and taste...

on its way from production to fertilization, the order of reproductive organs that the sperm must travel through is:

GRAPH. At point E on the graph, suppose you infuse into the extracellular environment of this neuron solution which very high potassium levels. What would you observe?

GRAPH. The undershoot of the action potential temporarily hyper polarizes the membrane. Which of the following contributes most to the hyper polarization of this membrane?

GRAPH. at which point on the graph above is the Na/K pump at work

GRAPH. Permeability to potassium would be highest at....

What is responsible for the majority of estrogen secretion a few days prior and up to ovulation?

Sperm mature in this part of the male reproductive system

in finding Nemo, dory the blue fish has short term memory loss. assuming that fish share many anatomical similarities in their brains as humans (this is only partly true), which structures in the brain may be non-functional in sweet dory?

cell bodies in the dorsal horn of the spinal cord receive information from nocioreceptors about a sensory event from a peripheral nerve. What does this sentence mean?

A slow-twitch muscle fiber...

What type of muscle are involuntary

if chloride concentration outside the neuron is higher than it is inside the neuron, then a synapse where chloride is the permeable ion would be...

FIGURE. there are two calcium channels on the left. which numbers correspond to these calcium channels?

FIGURE. through which channels would sodium flow through?

FIGURE. a mutation in the muscle cell disrupts the interaction of 6 and 7 in the labeled diagram. what would be the result of this mutation?

In the cross bridge cycle, what is myosin bound to in its high-energy confirmation?

Which muscle fiber is always recruited first?

the cells in the retina whose axons become the optic nerve are the ganglion cells