Skeletal, Nervous, Muscular Systems

Question 1

Functions of skeletal system

Answer 1

Structure, protection, blood cell production, stores minerals, assists movement.

Question 2

Axial skeleton (def and function)

Answer 2

Includes skull, rib cage, and vertebrae. Protection, structure, blood cell production, stores minerals

Question 3

Appendicular skeleton (def and function)

Answer 3

Arms, shoulders, legs and hips. Blood cell production, stores minerals, movement

Question 4

3 parts of bone

Answer 4

Compact, spongy, marrow

Question 5

Compact bone def

Answer 5

Covers outside of all bones, provides strength

Question 6

Spongy bone def

Answer 6

Fills ends of bones, shock absorber

Question 7

Bone marrow def

Answer 7

Red marrow- makes blood cells

Yellow marrow- fills long part of bone (fat)

Question 8

3 connective tissues

Answer 8

Tendon, ligament, cartilage

Question 9

Tendon

Answer 9

Connects muscle to bone

Question 10

Ligament

Answer 10

Connects bone to bone

Question 11

Cartilage

Answer 11

Covers end of bones, cushions and prevents friction

Question 12

3 kinds fo joints

Answer 12

Fixed, freely moveable, slightly movable

Question 13

Different joint types

Answer 13

Ball and socket (shoulder), hinge joint (elbow), saddle (connects finger to hand), pivot (ulna and radius), gliding (wrists),

Question 14

How does tech body react to lack of calcium in blood level

Answer 14

Takes calcium from bones

Question 15

Functions of muscular system

Answer 15

Movement, stability, generating heat

Question 16

Three types of muscle

Answer 16

Skeletal, cardiac, smooth

Question 17

Skeletal muscle

Answer 17

Attached to bones, moves skeleton, voluntary, striated

Question 18

Cardiac muscle

Answer 18

In heart, pumps blood, involuntary, striated

Question 19

Smooth muscle

Answer 19

Lines internal organs, moves food, non-striated, involuntary

Question 20

Muscles work in _ and _ on bones

Answer 20

Pairs, pull

Question 21

Filament

Answer 21

Long, skinny proteins (actin and myosin)

Question 22

Muscle contraction starts with a ___

Answer 22

Signal from nervous system (action potential)

Question 23

After getting action potential, what’s the next step to muscle contraction

Answer 23

Myosin bonds to actin, makes crossbridge

Question 24

After cross bridges are made, what’s the next step to muscle contraction

Answer 24

Myosin pulls on actin, actin slides over myosin.

Question 25

After myosin pulls on actin, what’s the next step to muscle contraction

Answer 25

ATP energy is used to break crossbridge.

Question 26

Functions of nervous system

Answer 26

Sensory input, processing, motor output

Question 27

Central nervous system

Answer 27

Brain +spinal chord, processes information

Question 28

Peripheral nervous system.

Answer 28

Nerves throughout system, sensory input and motor output

Question 29

Neuron

Answer 29

Specialized cell in nervous system that send electrical signals throughout body

Question 30

Dendrites

Answer 30

Receive incoming action potential

Question 31

Cell body

Answer 31

Largest part of cell, normal cell processes

Question 32

Axon

Answer 32

Action potential traveling site, like a highway

Question 33

Myelin sheath

Answer 33

Insulates axon, speeds up action potential.

Question 34

Axon terminals

Answer 34

Sends action potential out of cell

Question 35

Reflex

Answer 35

Rapid, involuntary response to stimuli

Question 36

Sensory neuron

Answer 36

Nerve cels responsible for gathering info

Question 37

Motor neuron

Answer 37

Nerve cells responsible for response to stimulus

Question 38

Action potential

Answer 38

Electrical signal used by nervous system

Question 39

How do voltage gated channels work

Answer 39

Voltage channels open when action potential reaches, lets something in.

Question 40

Synapse

Answer 40

Meeting place of two neurons

Question 41

Neurotransmitter

Answer 41

Chemical that transférés action potential from 1 neuron to the next