Mod 2 Mock Exam (version 1) Flashcards
What are the two parts of the nervous system?
- CNS
* PNS
Name 4 things controlled by homeostasis
- Blood pressure
- Blood glucose levels
- CO2 levels
- Water content
- Temperature
What protects the spinal cord?
Vertebrae
How much does the brain weigh?
3lb
What 4 parts make up the brain?
- Cerebrum
- Cerebellum
- Brain stem
- Diencephalon
What are the primary differences between the left and right side of the brain?
Left is logic, right is creative
Name the 4 lobes of the cerebrum & state each lobes function
- Frontal (personality, thoughts, movement control)
- Parietal lobe (temp, taste, touch, movement)
- Occipital lobe (vision & interpretation)
- Temporal lobe (memories and integrating them)
State 3 functions of the cerebellum
- Balance
- Muscle co-ordination
- Muscle tone
- Learning & language
State 6 functions of the Diencephalon
- Temp control
- Sensory functions of touch & pain
- Hunger
- Thirst
- Emotion
- Circadian cycles
- Primary hormone control center for nervous system
Name the 3 parts of the brain stem and state 2 functions for each
- Mid brain (connects upper & lower parts of brain, contains important reflex centres affecting the eyes, head and neck)
- Pons varolii (forms a bridge joining various parts of the brain together & joins cerebrum above to medulla and cerebellum below)
- Medulla oblongata (regulates vital actions, such as respiration and circulation & center for reflex actions such as swallowing, vomiting, coughing, sneezing).
Where is the cardiovascular center located and state 3 functions?
Located in the medulla. Controls rate & force of cardiac contraction, controls blood pressure, diameter of blood vessels.
Where is the respiratory center located and state 2 functions?
Located in medulla and the pons. Controls rate and depth of respiration, nerve impulses are passed which stimulate contraction of the diaphragm and intercostal muscles initiating respiration.
What does Decussation mean?
Left hemisphere of brain controls right half of body and vice versa
State 3 functions of the meninges
- Protect brain and spinal cord
- Maintains brain position
- Absorbs excess cerebrospinal fluid.
State the 3 layers of the meninges
- Dura mater
- Arachnoid mater
- Pia mater
State 4 functions of cerebrospinal fluid (CSF)
- Lubricate the brain & spinal cord preventing friction during movement
- Supports the brain
- Nourish and cleanse by washing away toxic substances
- Act as a shock absorber
Name the 3 ways CSF maintains homeostasis
Mechanical
Chemical
Circulation protection
If CSF was found outside the body, where would you assume an injury?
Skull
Describe a reflex action
Involuntary and immediate response to sensory stimulus
Which 2 types of nerves makes up the PNS and state their functions?
Sensory (5 senses, chemoreceptors, baroreceptors, osmoreceptors) and motor (somatic(voluntary)= skeletal muscle & Autonomic(involuntary) = cardiac muscle, smooth muscle, glands)
How many peripheral nerves are there and how do they break down?
31 (8,12,5,5,1)
How many cranial nerves are there and state 4 functions?
12 pairs. Relay sensory info to specialised areas of brain, relay info relating to touch temp and pain from head and neck, control motor functions of muscles around head and neck, autonomic control of many internal functions.