REFLEXES

Question 1

An automatic, involuntary response

Answer 1

REFLEX

Question 2

• can be a RESPONSE TO A STIMULUS or to internal feedback
• necessary to survival

Answer 2

REFLEX

Question 3

function of the reflex

Answer 3

MAINTAIN HOMEOSTASIS

Question 4

the FUNCTIONAL UNIT of the nervous system

Answer 4

NEURON

Question 5

Neurons and their components can be found in the

Answer 5

BRAIN, SPINAL CORD, PERIPHERAL TISSUES

Question 6

• RELAY sensory and motor information from one tissue to another using ELECTROCHEMICAL SIGNALS.
• Act as INTEGRATING CENTERS

Answer 6

NEURONS

Question 7

3 main structures of a neuron

Answer 7

cell body (soma, perikaryon)
dendrites
axons

Question 8

• Contains the components of a typical cell that conduct the normal processes of a living cell.
• Responds to messages FROM DENDRITES by processing information.

Answer 8

CELL BODY (soma, perikaryon)

Question 9

• Extensions of the cell body that are RECEPTIVE TO STIMULI.
• Conducts messages TOWARDS CELL BODY.

Answer 9

DENDRITES

Question 10

• A SINGLE EXTENSION of the cell body that transmits information from cell bodies to ‘other cells’.
• ‘Other cells’ respond to messages by continuing the conduction of the message or physically doing work (e.g. muscle contraction).

Answer 10

AXONS

Question 11

TYPES OF NEURONS

Answer 11

SENSORY
MOTOR
INTERNEURONS

Question 12

composed of the axons and dendrites of multiple neurons

Answer 12

NERVE

Question 13

where is the nerve located

Answer 13

OUTSIDE OF THE CNS

Question 14

conduct messages to and from the CNS

Answer 14

NERVES

Question 15

Messages conducted TOWARDS the CNS are – pain, touch, temperature

Answer 15

SENSORY IN NATURE

Question 16

Messages conducted AWAY from the CNS are – result in muscle contraction or gland secretion.

Answer 16

MOTOR IN NATURE

Question 17

houses a number of the cell bodies of the nerves located in the peripheral tissues

Answer 17

SPINAL CORD

Question 18

Acts as one of the INTEGRATING CENTERS for reflexes

Answer 18

SPINAL CORD

Question 19

The spinal cord is housed within the vertebrate of the ________

Answer 19

VERTEBRALMCOLUMN

Question 20

The spinal cord extends from the base of the skull to

Answer 20

LUMBAR 2

Question 21

regions of the spinal cord

Answer 21

cervical
thoracic
lumbar
sacral

Question 22

Nerves attach to the spinal cord at two roots

Answer 22

ANTERIOR & DORSAL ROOTS

Question 23

The actual anatomical and physiological basis behind a reflex is a

Answer 23

REFLEX ARC

Question 24

The SIMPLEST of all nerve pathways

Answer 24

REFLEX ARC

Question 25

The ROUTE messages or information travels through the nervous system

Answer 25

NERVE PATHWAY

Question 26

a nerve pathway involves what types of neurons

Answer 26

SENSORY & MOTOR

Question 27

a nerve or specialized tissue located at the end of a sensory neuron that is the FIRST STRUCTURE TO RESPOND to a stimulus

Answer 27

SENSORY RECEPTOR

Question 28

may act as the sensory receptor

Answer 28

SENSORY NEURON

Question 29

The TISSUE that responds to the message from the motor neuron

Answer 29

EFFECTOR ORGAN/TISSUE

Question 30

COMPONENTS OF A REFLEX ARC

Answer 30

SENSRY RECEPTOR SENSORY NEURON SPINAL CORD / BRAIN TISSUE MOTOR NEURON EFFECTOR ORGAN/TISSUE

Question 31

2 MAIN GROUPS OF REFLEXES

Answer 31

SOMATIC AUTONOMIC / VISCERAL

Question 32

The effector tissues of ________ are SMOOTH muscle, CARDIAC muscle and GLANDULAR tissue.

Answer 32

AUTONOMIC REFLEXES

Question 33

Both the _____ and _________ can act as integrating centers for AUTONOMIC REFLEXES

Answer 33

BRAIN & SPINAL CORD

Question 34

_________ result in gastric juice secretion, mouth watering upon seeing/smelling/thinking about food, regulating blood pressure, adjusting heart rate to level of exercise, etc.

Answer 34

AUTONOMIC REFLEXES

Question 35

The effector tissue of SOMATIC REFLEXES is _________

Answer 35

SKELETAL MUSCLE

Question 36

You have ________ over all of your skeletal muscles

Answer 36

CONSCIOUS CONTROL

Question 37

Stretching of muscle stimulates specialized sensory receptors located in THIGH MUSCLES called __________ to be stretched

Answer 37

MUSCLE SPINDLES

Question 38

withdrawal reflex involves how many neurons

Answer 38

3

Question 39

REMOVE a limb or body part form a PAINFUL STIMULUS

Answer 39

WITHDRAWAL REFLEX

Question 40

response to a STRETCH REFLEX

Answer 40

KNEE EXTENSION

Question 41

response to WITHDRAWAL REFLEX

Answer 41

KNEE FLEXION

Question 42

Associated with a withdrawal reflex of the LOWER LIMBS

Answer 42

CROSSED-EXTENSOR REFLEX

Question 43

PREVENTS FALLS by SHIFTING WEIGHT OF BODY to unaffected limb

Answer 43

CROSSED-EXTENSOR REFLEX

Question 44

response to CROSSED-EXTENSOR REFLEX

Answer 44

KNEE EXTENSION

Question 45

compression of spinal cord

Answer 45

SPINAL STENOSIS

Question 46

Demyelination Muscular dystrophies Spinal cord injuries Closed head injuries

Answer 46

ABSENT REFLEXES