Exam 2 (Unit 2)

A  False

B  True

A  I and III only

B  III and IV only

C  V only

D  I only

E  III only

F  I and II only

A  presbyopia

B  myopia

C  none of the choices.

D  hyperopia

A  True

B  False

A  I only

B  I, II, and IV only

C  I and II only

D  None of the choices

A  I only

B  IV only

C  II only

D  I and II only

E  II and III only

A  FALSE

B  TRUE

A  limbic system

B  pituitary gland

C  hypothalamus

D  Epithalamus

A  sodium

B  sodium and potassium

C  potassium

D  Calcium

A  chemoreceptor, mechanoreceptor

B  Exteroceptor, mechanoreceptor

C  sensory receptor, olfactory receptor

D  Interoceptor, nocioceptor

A  axon terminal

B  soma

C  all of the choices

D  dendrite

E  axon

A  they are inhibited by IPSPs.

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

C  they travel more slowly on myelinated fibers

D  they need a threshold stimulus

A  potassium

B  sodium

C  calcium

D  chloride

A  promotes urination; sympathetic

B  bronchiole dilation in lungs; sympathetic

C  gallbladder contracts to expel bile; parasympathetic

D  penis ejaculation; sympathetic

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

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

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

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

A  allowing the body to cope with an external threat

B  raising blood glucose levels

C  lens accommodation for close vision

D  a stimulation of heart rate and force of contraction

A  medulla oblongata

B  reticular formation

C  hypothalamus

D  midbrain

A  TRUE

B  FALSE

A  cerebellum

B  thalamus

C  hypothalamus

D  medulla

A  thermoreceptors

B  interoceptors

C  exteroceptors

D  nociceptors

A  nociceptors

B  interoceptors

C  exteroceptors

D  proprioceptors

A  involuntary, yet may be modified by learned behavior

B  autonomic only

C  always mediated by the brain

D  rapid, predictable, and can be learned responses

A  hyperpolarization of the postsynaptic cell membrane

B  influx of positively charged ions into the postsynaptic cell

C  depolarization of the postsynaptic cell membrane

D  opening of chemically gated sodium channels

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

B  sensory and motor neurons that supply the digestive tract

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

D  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

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

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

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

D  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.

A  Chemically gated sodium channels will be closed.

B  Chemically gated potassium channels will open.

C  Chemically gated sodium channels will open.

D  Chemically gated chloride channels will open.

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

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

C    

D  Different postsynaptic cells will have different receptors.

E  Acetylcholine has many different forms.

A  leakage channel

B  mechanically-gated channel

C  ligand-gated channel

D  voltage-gated channel

A  sympathetic division

B  somatic nervous system

C  parasympathetic division

D  sensory (afferent) division

A  none of the choices.

B  parallel

C  convergent

D  serial

A  sensory (afferent) division

B  sympathetic division

C  parasympathetic division

D  somatic nervous system

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

B  provide enormous surface area for receiving signals from other neurons

C  convey incoming messages toward the cell body

D  produce short-distance signals called graded potentials

A  the presynaptic neuron is sending frequent IPSP

B  the postsynaptic cell is sending frequent action potential

C  a presynaptic neuron is sending frequent EPSP

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

A  TRUE

B  FALSE

A  FALSE

B  TRUE

A  TRUE

B  FALSE

A  FALSE

B  TRUE