Exam 2 (Unit 2)

A  False

B  True

A  I only

B  I and II only

C  V only

D  III and IV only

E  III only

F  I and III only

A  presbyopia

B  none of the choices.

C  myopia

D  hyperopia

A  False

B  True

A  I only

B  None of the choices

C  I and II only

D  I, II, and IV only

A  IV only

B  I only

C  II only

D  I and II only

E  II and III only

A  TRUE

B  FALSE

A  hypothalamus

B  Epithalamus

C  limbic system

D  pituitary gland

A  sodium and potassium

B  potassium

C  Calcium

D  sodium

A  Interoceptor, nocioceptor

B  Exteroceptor, mechanoreceptor

C  sensory receptor, olfactory receptor

D  chemoreceptor, mechanoreceptor

A  dendrite

B  axon terminal

C  all of the choices

D  soma

E  axon

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

B  they need a threshold stimulus

C  they are inhibited by IPSPs.

D  they travel more slowly on myelinated fibers

A  chloride

B  calcium

C  sodium

D  potassium

A  gallbladder contracts to expel bile; parasympathetic

B  bronchiole dilation in lungs; sympathetic

C  promotes urination; sympathetic

D  penis ejaculation; sympathetic

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

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

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

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

A  lens accommodation for close vision

B  raising blood glucose levels

C  a stimulation of heart rate and force of contraction

D  allowing the body to cope with an external threat

A  reticular formation

B  medulla oblongata

C  hypothalamus

D  midbrain

A  FALSE

B  TRUE

A  cerebellum

B  medulla

C  thalamus

D  hypothalamus

A  exteroceptors

B  thermoreceptors

C  nociceptors

D  interoceptors

A  interoceptors

B  exteroceptors

C  nociceptors

D  proprioceptors

A  always mediated by the brain

B  involuntary, yet may be modified by learned behavior

C  rapid, predictable, and can be learned responses

D  autonomic only

A  depolarization of the postsynaptic cell membrane

B  influx of positively charged ions into the postsynaptic cell

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

C  sensory and motor neurons that supply the digestive tract

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  Potassium permeability is about 25 times greater than sodium ions.

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

C  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.

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

A  Chemically gated chloride channels will open.

B  Chemically gated potassium channels will open.

C  Chemically gated sodium channels will be closed.

D  Chemically gated sodium channels will open.

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

B  Acetylcholine has many different forms.

C  Different postsynaptic cells will have different receptors.

D    

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

A  ligand-gated channel

B  voltage-gated channel

C  leakage channel

D  mechanically-gated channel

A  sympathetic division

B  parasympathetic division

C  sensory (afferent) division

D  somatic nervous system

A  parallel

B  none of the choices.

C  convergent

D  serial

A  somatic nervous system

B  parasympathetic division

C  sensory (afferent) division

D  sympathetic division

A  provide enormous surface area for receiving signals from other neurons

B  convey incoming messages toward the cell body

C  produce short-distance signals called graded potentials

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

A  the postsynaptic cell is sending frequent action potential

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

C  the presynaptic neuron is sending frequent IPSP

D  a presynaptic neuron is sending frequent EPSP

A  FALSE

B  TRUE

A  TRUE

B  FALSE

A  TRUE

B  FALSE

A  FALSE

B  TRUE