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A&P 1 > test 3 > Flashcards

test 3 Flashcards

0
Q

What type of ion channel opens and closes at random

A

Leakage Channel

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1
Q

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

A

Somatic

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2
Q

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

A

chemically-gated channel

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3
Q

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

A

Tendon

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4
Q

Which region of a sarcomere includes only thin filaments

A

I band

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5
Q

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

A

Smooth Muscle

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6
Q

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

A

Cell Body

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7
Q

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

A

Twitch Contraction

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8
Q

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

A

microglial cells

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9
Q

What is the typical resting membrane potential of a neuron

A

-70mV

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10
Q

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

A

Satellite Cells

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11
Q

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

A

A band

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12
Q

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

A

Axon

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13
Q

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

A

Perimysium

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14
Q

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

A

Smooth Muscle

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15
Q

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

A

Mechanically-Gated Channel

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16
Q

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

A

Dendrite

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17
Q

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

A

Myosin

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18
Q

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

A

Actin

19
Q

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

A

Autonomic

20
Q

Which regulatory protein binds to calcium to initiate muscle contraction

A

Troponin

21
Q

What structure surrounds a myofibril and stores calcium ions

A

Sarcoplasmic Reticulum

22
Q

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

A

astrocytes

23
Q

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

A

Skeletal Muscle

24
Q

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

A

Intermediate

25
Q

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

A

Motor Units

26
Q

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

A

incomplete tetanus

27
Q

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

A

Cardiac Muscle

28
Q

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

A

Cardiac Muscle

29
Q

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

A

tropomyosin

30
Q

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

A

Complete Tetanus

31
Q

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

A

H band

32
Q

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

A

Voltage-Gated Membrane

33
Q

A ______ neuron has one axon and several dendrites

A

Multipolar

34
Q

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

A

Anaxionic

35
Q

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

A

Endomysium

36
Q

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

A

Oligodendrocyte

37
Q

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

A

Central

38
Q

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

A

Bipolar

39
Q

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

A

Z disc

40
Q

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

A

Schwann Cell

41
Q

What is the functional unit of a myofibril

A

Sarcomere

42
Q

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

A

Excretion of Waste Products

43
Q

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

A

Transverse Tubule

44
Q

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

A

Unipolar

45
Q

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

A

Ependymal Cell

A&P 1 (5 decks)

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