L13 Nervous System and Mental Health Flashcards
What two systems work together to control homeostasis and most of our hormonal control and electrical impulse control in the body?
- Nervous
- Endocrine
What system is the pituitary gland, part of?
Nervous and endocrine
- The nervous system signals the endocrine system when to release hormones from the endocrine glands
- Nervous or electrical impulse control is primarily a function of the nervous system
How many parts are in the nervous system?
two
What are the 2 parts are in the nervous system
- Central
- Peripheral
What makes up the “central” nervous system?
- brain
- spinal cord
What makes up the “peripheral” nervous system?
- everything that comes from the spinal cord
Periphery refers to the outer area of the body i.e. arms, legs, and organs.
Autonomic Nervous System
- Sometimes referred to as the visceral nervous system.
- Mostly falls under involuntary controls.
- This includes smooth muscle control such as in the digestive system, respiratory system, urinary system, and the female reproductive system
- Additionally, the cardiac or cardiorespiratory system (heartbeat).
Somatic Nervous System
- Soma meaning body would include all of the skeletal muscle in the body.
- Primarily under volitional control, this would control bodily movements such as bicep flexing.
- Neurons are a basic functional unit in the system.
- Neuroglia are support cells.
True or False: The central nervous system is everything in the center of the body, brain, and spinal cord.
True
True or False: The peripheral nervous system is everything coming off of the central nervous system, such as the cranial nerves.
True
How many pairs of cranial nerves come off the brain?
12
How many pairs of spinal nerves come off the spinal cord?
31
How many cervical spinal nerves are there?
8
How many thoracic spinal nerves are there?
12
How many lumbar spinal nerves are there?
5
How many sacral spinal nerves are there?
5
How many coccyx nerves?
1
The autonomic nervous system is most of what happens involuntarily or voluntary?
Involuntary
The autonomic nervous system has sensory or motor functions?
Both
- Think of smooth muscle compared to a cardiac muscle that contracts much slower and is under the autonomic control of the nervous system. Then the somatic nervous system, is what we primarily have volitional control over what we call voluntary control. This is also both sensory and motor. And we have receptors in the skin, the muscle, and the joints, we also have our senses, vision, hearing, taste, and smell. And all of those are part of the somatic nervous system.
What is the body of the neuron called?
Soma
What is the center of a neuron called?
Nucleus
True or False: The main axon comes down the cell body.
True
What are the two main parts of the neuron?
- dendrites
- axon
What do “dendrites” do?
Carry electrical impulses toward the cell body
- there’s at least one dendrite but most of our neurons have more than that.