Muscular System /nervous System

Front 1

Muscle produce movement by?

Back 1

Contracting in response to nervous stimulation

Front 2

Muscle contraction results from the sliding together of?

Back 2

Actin and myosin filaments within the muscle cell or fiber

Front 3

Each muscle cell consists of

Back 3

Myofibrils

Front 4

Each muscle cell consists of myofibrils, which in turn are made up of?

Back 4

Still smaller units called sarcomeres

Front 5

Calcium and adenosine triphosphate must be present for

Back 5

A muscle cell to contract

Front 6

Nervous stimulation from motor neurons causes the release of

Back 6

Calcium ions from the sarcoplasmic reticulum

Front 7

Calcium ions attach to inhibitory proteins on the actin filaments within the cell

Back 7

Moving them aside so that cross -bridges can form between actin and myosin filaments

Front 8

Using energy supplied by ATP the filaments slide to together to?

Back 8

produce contraction

Front 9

The skeletal muscles, which make up the muscular system, are also called

Back 9

Voluntary muscles

Front 10

Voluntary muscles are under

Back 10

Conscious control

Front 11

Skeletal muscles must work in

Back 11

Pairs

Front 12

The muscle that excutes a given movement is

Back 12

The prime mover

Front 13

The muscle that produces the opposite movement is

Back 13

The antagonist

Front 14

Other muscles known as

Back 14

Synergists

Front 15

Other muscles known as synergists may work in cooperation with the

Back 15

Prime mover

Front 16

Muscles can be classified according to the movement they elicit. There are?

Back 16

Flexors and extensors

Front 17

Flexors reduce the angle at the?

Back 17

Joint

Front 18

Extensors increase the?

Back 18

Angle

Front 19

Abductors draw a line away from?

Back 19

The midline

Front 20

Adductors return the limb back toward?

Back 20

The body

Front 21

The nervous system consists essentially of?

Back 21

The brain, the spinal cord, and the nerves

Front 22

The nervous system enables us to?

Back 22

Think, reason, remember, and carry out other abstract activities

Front 23

Nervous system makes body movements by skeletal muscles possible by supplying them with?

Back 23

Nerve impulses that cause contraction

Front 24

Nervous system works closely with the endocrine glands, correlating and integrating body functions such as?

Back 24

Digestion and reproduction

Front 25

All actions of the nervous system depend on the transmission of nerve?

Back 25

Impulse over neurons, or nerve cells

Front 26

All actions of the nervous system depend on the transmission of nerve impulses over neurons, or nerve cells, the functional units of?

Back 26

The nervous system

Front 27

The main parts of a neuron are the?

Back 27

Cell, body, axon, and dendrites

Front 28

Dendrites transmit the impulse?

Back 28

Toward cell body

Front 29

Axons transmit the impulse?

Back 29

Away from the cell body

Front 30

The nervous system may be divided structurally into a?

Back 30

Central nervous system (CNS) and peripheral nervous system (PNS)

Front 31

The PNS consists of all the nerves that transmit information to and?

Back 31

From the CNS

Front 32

Sensory neurons transmit nerve impulses toward the?

Back 32

Central nervous system (CNS)

Front 33

Afferent is

Back 33

Sensory neurons

Front 34

Motor neurons transmit nerve impulses away from the CNS toward the?

Back 34

Effector organs such as muscles, glands, and digestive organs

Front 35

Examples of perception

Back 35

Seeing, hearing, tasting, smelling, and touching

Front 36

Efferent

Back 36

Motor neurons

Front 37

The major parts of the brain are the?

Back 37

Cerebrum, cerebellum, medulla oblongata

Front 38

Cerebrum associated with?

Back 38

Movement and sensory input

Front 39

Cerebellum is responsible for?

Back 39

Muscular coordination

Front 40

Medulla oblongata controls many vital functions such as?

Back 40

Respiration and heart rate

Front 41

The spinal cord is approximately?

Back 41

18 inches long and extends from the base of the skull

Front 42

Foramen magnum

Back 42

The hole in the base of the skull through which the spinal cord passes

Front 43

The hole in the base of the skull through which the spinal cord passes

Back 43

Foramen magnum

Front 44

The spinal cord is approximately 18 inches long and extends from the base of the skull to?

Back 44

The first or second lumbar vertebra

Front 45

First and second lumbar vertebra is called?

Back 45

L1 or L2

Front 46

Thirty-one pairs of spinal nerves exit?

Back 46

The spinal cord

Front 47

Simple (spinal) reflexes are those in which nerve impulses travel through?

Back 47

The spinal cord and do not reach the brain

Front 48

Most reflex pathways involve impulses traveling to and from the brain in?

Back 48

Ascending and descending tracts of the spinal cord

Front 49

Sensory impulses enter the

Back 49

Dorsal horns of the spinal cord

Front 50

Motor impulses leave through the ?

Back 50

Ventral horns of the spinal cord

Front 51

Central nervous system consists of the?

Back 51

Brain and spinal cord

Front 52

Peripheral nervous system includes all of the nerves and?

Back 52

Their branches