Final Lecture Exam

Navigation » List of Schools » Prince George Community College » Biology » Bio 2050 – Anatomy and Physiology » Fall 2022 » Final Lecture Exam

Need help with your exam preparation?

Existing Quiz Clients Login here

Below are the questions for the exam with the choices of answers:

Try The Exam

Question #1

Nuclei within the gray matter of the spinal cord that receive information from sensory receptors such as pain or pressure receptors in the skin are _____ nuclei.

A autonomic motor

B somatic sensory

C somatic motor

D visceral sensory

Question #2

A reflex allows an individual to quickly respond to a potentially dangerous stimulus without having to wait for the brain to process the information.

A True

B False

Question #3

The two divisions of the autonomic nervous system

A use preganglionic and postganglionic neurons to innervate skeletal muscle.

B contain autonomic ganglia to house ganglionic neurons.

C are voluntary.

D are composed of PNS structures only.

E function only during sleep.

Question #4

A lesion in the _____ is likely to affect thinking, planning, and overall personality, as this brain region plays a significant role in cognition.

A olfactory bulb

B prefrontal cortex

C reticular activating system

D premotor cortex

Question #5

One function of the reticular formation is to assist in the regulation of respiration and blood pressure.

A True

B False

Question #6

Continuous conduction of a nerve impulse occurs only along

A myelinated axons.

B axons in the CNS.

C axons in the PNS.

D unmyelinated axons.

E dendrites.

Question #7

The nervous system contains more neurons than glial cells.

A True

B False

Question #8

Endocannabinoids are neuromodulators that decrease neurotransmitter release from presynaptic neurons.

A False

B True

Question #9

Neural stem cells in the CNS

A have no known function.

B can migrate to the PNS as needed.

C can form new neurons throughout the CNS.

D can only form glial cells.

E can form new neurons in only certain portions of the CNS such as the hippocampus.

Question #10

The glenohumeral ligaments are

A weak and indistinct.

B strong and distinct.

Question #11

What explains the dramatic acceleration in lengthwise bone growth at puberty?

A Increased activity of osteoclasts occurs in response to parathyroid hormone stimulation.

B Increased secretion of sex hormones promotes epiphyseal plate growth.

C Increased rate of calcium deposition occurs due to high blood calcium levels.

D Increased physical activity causes lengthwise growth in response to bone stress.

E Increased absorption of dietary vitamins and minerals strengthens the matrix.

Question #12

Which vitamin is required for the normal synthesis of collagen?

A Vitamin B

B Vitamin D

C Vitamin C

D Vitamin K

E Vitamin A

Question #13

When the body is cold and needs to conserve heat, the blood vessels in the dermis dilate to allow for more blood flow in that region.

A True

B False

Question #14

Nails, hair, and sweat and sebaceous glands are all derived from the epidermis.

A False

B True

Question #15

During osmosis, water moves toward the solution with the _________ solute concentration.

A lesser

B greater

Question #16

Diffusion rate is fastest when the concentration gradient is

A slightest and temperature is lowest.

B steepest and temperature is at body temperature.

C slightest and temperature is highest.

D steepest and temperature is highest.

E slightest and temperature is at body temperature.

Question #17

Symport active transporters move two substances across the membrane in the same direction.

A True

B False

Question #18

Organs contain two or more tissues that work together to perform specific, complex functions.

A False

B True

Question #19

Diagnosing a disease involves determining the

A effector and the set point.

B multiple side effects of a drug.

C negativity of the feedback.

D cause of the homeostatic imbalance.

Question #20

In a graph of wave summation, the tension level returns to baseline between each peak of force.

A False

B True

Question #21

In general, a muscle’s resting length is its optimal length for force generation.

A False

B True

Question #22

The floor of the pelvic cavity includes skeletal muscles that function to support organs in that cavity.

A False

B True

Question #23

The repolarization of the action potential involves the opening of

A voltage-gated Na+ channels.

B chemically gated K+ channels.

C chemically gated Na+ channels.

D voltage-gated K+ channels.

Question #24

A motor unit within the powerful quadriceps muscle would

A generally contain less than ten fibers.

B generally contain several hundred fibers.

C be much like those in the eye muscles.

D contain several motor neurons.

Question #25

When a muscle relaxes,

A crossbridges form and muscle extensibility returns the muscle to rest length.

B crossbridges stop forming and muscle elasticity returns the muscle to rest length.

C crossbridges stop forming and muscle extensibility returns the muscle to rest length

D crossbridges form and muscle elasticity returns the muscle to rest length.

Question #26

For relaxation to occur,

A ACh receptors open and Ca++ channels on the sarcoplasmic reticulum open.

B ACh receptors close and Ca++ channels on the sarcoplasmic reticulum open.

C ACh receptors open and Ca++ channels on the sarcoplasmic reticulum close.

D ACh receptors close and Ca++ channels on the sarcoplasmic reticulum close.

Question #27

In an isotonic contraction, the tension produced exceeds the resistance and muscle fibers will shorten.

A False

B True

Question #28

Release of crossbridges and a decline in muscle tension characterize the _______ period of a twitch.

A contraction

B relaxation

C latent

Question #29

When a muscle is isometrically contracted, its length _______ change.

A does

B does not

Question #30

The action potential of a muscle fiber occurs

A along the sarcolemma and down the T-tubules.

B at the end plate.

C in the mitochondria.

D within the sarcoplasmic reticulum.

Question #31

During skeletal muscle contraction, more force is created when more motor units are activated.

A True

B False

Question #32

A power stroke involves

A a thin filament shortening in length and thereby shortening the sarcomere.

B a thick filament pushing an actin filament towards the nearest Z-line.

C an actin molecule pulling a myosin molecule toward the M-line.

D a myosin head pulling a thin filament toward the center of the sarcomere.

Question #33

Muscles that are used for precisely controlled movements generally contain large motor units.

A True

B False

Question #34

When an impulse arrives at the knob of the motor neuron, calcium

A is released from synaptic vesicles.

B exits through active transport pumps and brings transmitter with it.

C enters through active transport pumps and triggers the release of transmitter.

D exits through voltage-gated channels and triggers transmitter release.

E enters through voltage-gated channels and triggers the release of transmitter.

Question #35

An end plate potential is an event that involves a gain of

A negative charge along the inside of the cell membrane, as sodium rapidly enters.

B negative charge along the inside of the cell membrane, as potassium rapidly enters.

C positive charge along the inside of the cell membrane, as potassium rapidly enters.

D positive charge along the inside of the cell membrane, as sodium rapidly enters.

Question #36

Which is the neurotransmitter that causes the release of calcium ions from reservoirs within the muscle cell and thereby initiates the steps of contraction?

A Acetylcholinesterase

B Norepinephrine

C Acetylcholine

D Serotonin

Question #37

Consider the difference between lifting a light pad of paper versus a heavy textbook. The primary way the level of force of muscle contraction is controlled is by

A activating the motor units at a different frequency.

B recruiting a different number of motor units.

C activating different regions of the muscle.

D altering the number of crossbridges each individual fiber uses.

Question #38

Which contraction occurs when you try (unsuccessfully) to move a wall?

A Isometric

B Isotonic

Question #39

The contraction phase of a muscle twitch has a shorter duration than the relaxation phase.

A True

B False

Question #40

For relaxation to occur,

A calcium leaves the sarcoplasmic reticulum, and troponin binds calcium and blocks the binding sites on actin.

B extracellular calcium levels fall, calcium is pumped into the myofibril, and tropomyosin slides away from actin.

C calcium enters the myofibril, it detaches from myosin, and the binding sites on myosin become inactive.

D sarcoplasm calcium levels fall, calcium is removed from troponin, and tropomyosin blocks binding sites on actin.

Question #41

The spring-like property that returns muscle to its original length after a contraction ends is

A elasticity.

B extensibility.

C conductivity.

D treppe effect.

E contractility.

Question #42

During which phase of the crossbridge cycle is ATP split into ADP and Pi?

A Immediately preceding the detachment of the myosin head.

B Immediately preceding the power stroke.

C Immediately preceding the resetting of the myosin head.

Question #43

The calcium ions involved in skeletal muscle contraction bind to a(n)______ subunit.

A elastin

B tropomyosin

C myosin

D actin

E troponin

Question #44

The property of muscle tissue that allows an impulse to travel down the entire length of the cell membrane is

A conductivity.

B contractility.

C extensibility.

D responsibility.

E elasticity.

Question #45

Acetylcholine is released from a neuron

A by conduction through a gap junction from nerve to muscle.

B by rapid diffusion when a voltage-gated ion channel opens for it.

C through exocytosis when a vesicle fuses with the membrane.

D by a primary active transport pump.

Question #46

The characteristic of muscle that allows it to be passively stretched is

A elasticity.

B excitability.

C extensibility.

D conductivity.

E contractility.

Question #47

In a lab, wave summation is demonstrated by increasing the _________ of the stimulus.

A intensity

B frequency

C capacitance

D warm up time

Question #48

The return of a contracted muscle fiber to its resting length is an active (energy requiring) process.

A True

B False

Question #49

Which sequence correctly lists the changes that allow the thick and thin filaments to slide past one another in skeletal muscle contraction?

A Return – pivot – attach – detach

B Attach – pivot – detach – return

C Pivot – attach – return – detach

D Attach – detach – pivot – return

E Pivot – attach – detach – return

Try The Exam

Fresh Grad Lands Job as Real Estate Agent With Help from Professional Writers

Need help with your exam preparation?

Below are the questions for the exam with the choices of answers:

Christian S.

Tyra

Linda

Manush

We accept payment