Exam 2 (Unit 2)

A  True

B  False

A  I and III only

B  V only

C  III only

D  I only

E  III and IV only

F  I and II only

A  none of the choices.

B  myopia

C  presbyopia

D  hyperopia

A  True

B  False

A  I only

B  None of the choices

C  I and II only

D  I, II, and IV only

A  I and II only

B  I only

C  IV only

D  II and III only

E  II only

A  TRUE

B  FALSE

A  hypothalamus

B  pituitary gland

C  Epithalamus

D  limbic system

A  sodium and potassium

B  Calcium

C  sodium

D  potassium

A  sensory receptor, olfactory receptor

B  chemoreceptor, mechanoreceptor

C  Exteroceptor, mechanoreceptor

D  Interoceptor, nocioceptor

A  soma

B  dendrite

C  all of the choices

D  axon

E  axon terminal

A  they are inhibited by IPSPs.

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

C  they need a threshold stimulus

D  they travel more slowly on myelinated fibers

A  calcium

B  potassium

C  chloride

D  sodium

A  promotes urination; sympathetic

B  penis ejaculation; sympathetic

C  gallbladder contracts to expel bile; parasympathetic

D  bronchiole dilation in lungs; sympathetic

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

A  lens accommodation for close vision

B  a stimulation of heart rate and force of contraction

C  raising blood glucose levels

D  allowing the body to cope with an external threat

A  medulla oblongata

B  reticular formation

C  midbrain

D  hypothalamus

A  TRUE

B  FALSE

A  cerebellum

B  hypothalamus

C  medulla

D  thalamus

A  thermoreceptors

B  exteroceptors

C  interoceptors

D  nociceptors

A  nociceptors

B  proprioceptors

C  exteroceptors

D  interoceptors

A  autonomic only

B  involuntary, yet may be modified by learned behavior

C  always mediated by the brain

D  rapid, predictable, and can be learned responses

A  influx of positively charged ions into the postsynaptic cell

B  depolarization of the postsynaptic cell membrane

C  opening of chemically gated sodium channels

D  hyperpolarization of the postsynaptic cell membrane

A  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

B  sensory and motor neurons that supply the digestive tract

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

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 potassium channels will open.

B  Chemically gated sodium channels will be closed.

C  Chemically gated sodium channels will open.

D  Chemically gated chloride channels will open.

A    

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

C  Different postsynaptic cells will have different receptors.

D  Acetylcholine has many different forms.

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

A  voltage-gated channel

B  mechanically-gated channel

C  leakage channel

D  ligand-gated channel

A  somatic nervous system

B  sympathetic division

C  sensory (afferent) division

D  parasympathetic division

A  convergent

B  none of the choices.

C  serial

D  parallel

A  somatic nervous system

B  sympathetic division

C  parasympathetic division

D  sensory (afferent) division

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

B  convey incoming messages toward the cell body

C  produce short-distance signals called graded potentials

D  provide enormous surface area for receiving signals from other neurons

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

B  a presynaptic neuron is sending frequent EPSP

C  the presynaptic neuron is sending frequent IPSP

D  the postsynaptic cell is sending frequent action potential

A  FALSE

B  TRUE

A  FALSE

B  TRUE

A  FALSE

B  TRUE

A  TRUE

B  FALSE