Exam 2 (Unit 2)

A  False

B  True

A  III only

B  I and II only

C  V only

D  I and III only

E  III and IV only

F  I only

A  presbyopia

B  none of the choices.

C  myopia

D  hyperopia

A  False

B  True

A  None of the choices

B  I and II only

C  I, II, and IV only

D  I only

A  I and II only

B  II and III only

C  I only

D  IV only

E  II only

A  FALSE

B  TRUE

A  hypothalamus

B  limbic system

C  pituitary gland

D  Epithalamus

A  sodium

B  Calcium

C  sodium and potassium

D  potassium

A  chemoreceptor, mechanoreceptor

B  sensory receptor, olfactory receptor

C  Exteroceptor, mechanoreceptor

D  Interoceptor, nocioceptor

A  dendrite

B  all of the choices

C  soma

D  axon

E  axon terminal

A  they are inhibited by IPSPs.

B  they need a threshold stimulus

C  they travel more slowly on myelinated fibers

D  they exhibit an all-or-none response. b. they are inhibited by IPSPs.

A  sodium

B  chloride

C  calcium

D  potassium

A  promotes urination; sympathetic

B  penis ejaculation; sympathetic

C  bronchiole dilation in lungs; sympathetic

D  gallbladder contracts to expel bile; parasympathetic

A  decreased blood glucose, increased GI peristalsis, and increased heart rate and blood pressure

B  decreased blood glucose, increased GI peristalsis, and decreased heart rate and blood pressure

C  increased blood glucose, increased GI peristalsis, and decreased heart rate and blood pressure

D  increased blood glucose, decreased GI peristalsis, and increased heart rate and blood pressure

A  allowing the body to cope with an external threat

B  lens accommodation for close vision

C  raising blood glucose levels

D  a stimulation of heart rate and force of contraction

A  hypothalamus

B  midbrain

C  reticular formation

D  medulla oblongata

A  FALSE

B  TRUE

A  medulla

B  cerebellum

C  thalamus

D  hypothalamus

A  exteroceptors

B  thermoreceptors

C  interoceptors

D  nociceptors

A  nociceptors

B  exteroceptors

C  interoceptors

D  proprioceptors

A  rapid, predictable, and can be learned responses

B  involuntary, yet may be modified by learned behavior

C  autonomic only

D  always mediated by the brain

A  influx of positively charged ions into the postsynaptic cell

B  opening of chemically gated sodium channels

C  depolarization of the postsynaptic cell membrane

D  hyperpolarization of the postsynaptic cell membrane

A  motor fibers that conduct nerve impulses from the CNS to skeletal muscles

B  sensory neurons that convey information from somatic receptors in the head, body wall, and limbs and from receptors from the special senses of vision, hearing, taste, and smell to the CNS

C  sensory and motor neurons that supply the digestive tract

D  motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle, and glands

A  A threshold stimulus will cause the opening of voltage gated sodium ion channels that will cause further depolarizing stimulus. This stimulus will open still more voltage gated sodium ion channels.

B  Voltage gated potassium ion channels open slowly and remain open long enough to cause hyperpolarization.

C  Potassium permeability is about 25 times greater than sodium ions.

D  The sodium potassium pump consistently moves ions as long as ATP is available, and regardless of membrane potential changes.

A  Chemically gated sodium channels will be closed.

B  Chemically gated potassium channels will open.

C  Chemically gated chloride channels will open.

D  Chemically gated sodium channels will open.

A  Postsynaptic cells have a dynamic and changing metabolism and respond differently at different times.

B    

C  Different postsynaptic cells will have different receptors.

D  Acetylcholine has many different forms.

E  Acetylcholine has a “dose effect.” Larger doses are stimulating while small doses inhibit.

A  leakage channel

B  mechanically-gated channel

C  ligand-gated channel

D  voltage-gated channel

A  sensory (afferent) division

B  somatic nervous system

C  parasympathetic division

D  sympathetic division

A  none of the choices.

B  parallel

C  serial

D  convergent

A  parasympathetic division

B  somatic nervous system

C  sensory (afferent) division

D  sympathetic division

A  provide enormous surface area for receiving signals from other neurons

B  generate nerve impulses and transmit them away from the cell body

C  convey incoming messages toward the cell body

D  produce short-distance signals called graded potentials

A  the postsynaptic cell can be influenced by only one presynaptic cell

B  the presynaptic neuron is sending frequent IPSP

C  a presynaptic neuron is sending frequent EPSP

D  the postsynaptic cell is sending frequent action potential

A  TRUE

B  FALSE

A  FALSE

B  TRUE

A  TRUE

B  FALSE

A  TRUE

B  FALSE