test 3

Question 0

What type of ion channel opens and closes at random

Answer 0

Leakage Channel

Question 1

The nervous system relays sensory information from specialized sensory organs and from sensory structures in the body wall and limbs

Answer 1

Somatic

Question 2

What type of ion channel opens in response to a specific ligand, such as a neurotransmitter or a hormone

Answer 2

chemically-gated channel

Question 3

Which of the following is an extension of the connective tissue surrounding a skeletal muscle that is continuous with the periosteum of a bone

Answer 3

Tendon

Question 4

Which region of a sarcomere includes only thin filaments

Answer 4

I band

Question 5

Which type of muscle tissue fiber contains thick, thin, and intermediate filaments

Answer 5

Smooth Muscle

Question 6

The _______ of a neuron contains the nucleus and most of the cytoplasm

Answer 6

Cell Body

Question 7

What is the term for a single-contraction/ relaxation cycle of a skeletal muscle in response to a single nerve stimulus

Answer 7

Twitch Contraction

Question 8

Which type of neuroglial cell phagocytizes pathogens and damaged tissue in the central nervous system

Answer 8

microglial cells

Question 9

What is the typical resting membrane potential of a neuron

Answer 9

-70mV

Question 10

Which type of neuroglial cell supports and nourishes neurons in the peripheral nervous system

Answer 10

Satellite Cells

Question 11

Which region of a sarcomere extends the length of the thick filaments

Answer 11

A band

Question 12

A ________ is a process of a neuron that is typically long and unbranched (except at the terminal end)

Answer 12

Axon

Question 13

Which of the following is a layer of connective tissue that separates skeletal muscle fibers into fascicles

Answer 13

Perimysium

Question 14

Which type of muscle tissue is non-striated in appearance and mainly under involuntary control

Answer 14

Smooth Muscle

Question 15

What type of ion channel opens in response to a specific physical stimulus, such as pressure or vibration

Answer 15

Mechanically-Gated Channel

Question 16

A ________ is a process of a neuron that is typically short and branched

Answer 16

Dendrite

Question 17

Which of the following is a contractile protein of the thick filament

Answer 17

Myosin

Question 18

Which of the following is a contractile protein of the thin filament

Answer 18

Actin

Question 19

The _____ nervous system relays motor commands to smooth muscles and glands

Answer 19

Autonomic

Question 20

Which regulatory protein binds to calcium to initiate muscle contraction

Answer 20

Troponin

Question 21

What structure surrounds a myofibril and stores calcium ions

Answer 21

Sarcoplasmic Reticulum

Question 22

Which type of neuroglial cells maintains the blood-brain barrier in the central nervous system

Answer 22

astrocytes

Question 23

Which type of muscle tissue is striated in appearance and mainly under voluntary control

Answer 23

Skeletal Muscle

Question 24

Skeletal muscle tissue can develop the maximal force of contraction when sarcomeres begin at a _______ length.

Answer 24

Intermediate

Question 25

What is a group of skeletal muscle fibers that are stimulated by a single somatic motor neurons

Answer 25

Motor Units

Question 26

What is the term for sustained, but wavering, contraction of a skeletal muscle

Answer 26

incomplete tetanus

Question 27

Which type of muscle tissue can contract without receiving stimulus from a neuron

Answer 27

Cardiac Muscle

Question 28

Which type of muscle is striated in appearance and mainly under involuntary control

Answer 28

Cardiac Muscle

Question 29

Which regulatory protein covers the active sites of actin when the muscle is at rest

Answer 29

tropomyosin

Question 30

What is the term for a sustained, unwavering contraction of a skeletal muscle

Answer 30

Complete Tetanus

Question 31

Which region of a sarcomere occurs at the center of the A band

Answer 31

H band

Question 32

What type of ion channel opens in response to a specific change in membrane potential

Answer 32

Voltage-Gated Membrane

Question 33

A ______ neuron has one axon and several dendrites

Answer 33

Multipolar

Question 34

A _______ neuron has more than two processes, but the axon cannot be distinguished from the dendrites

Answer 34

Anaxionic

Question 35

Which of the following is a layer of connective tissue that surround an individual skeletal muscle fiber

Answer 35

Endomysium

Question 36

Which type of neuroglial cell produces a myelin sheath around the axons of neurons of the central nervous system

Answer 36

Oligodendrocyte

Question 37

The spinal cord and brain are components of the ______ nervous system

Answer 37

Central

Question 38

A neuron has one axon and one main dendrite that connects to the cel body separately

Answer 38

Bipolar

Question 39

Which region of a sarcomere occurs at the center of each I band

Answer 39

Z disc

Question 40

Which type of neuroglial cell produces a myelin sheath around the axons of the peripheral nervous system

Answer 40

Schwann Cell

Question 41

What is the functional unit of a myofibril

Answer 41

Sarcomere

Question 42

Which of the following is NOT a major function of the muscular system

Answer 42

Excretion of Waste Products

Question 43

What structure us an invagination of the plasma membrane of the skeletal muscle fiber

Answer 43

Transverse Tubule

Question 44

A______ neuron has one axon and one dendrite that fuse before connecting to the cell body

Answer 44

Unipolar

Question 45

Which type of neuroglial cell produces the cerebrospinal fluid in the central nervous system

Answer 45

Ependymal Cell