Unit 12 assignment 2
The nervous system
Task 1
Effectors are parts of the body ,such as muscles and glands, which produce a response
to a detected stimulus. For example a muscle that contracts in order to move an arm.
An effector cell is any of various types of cell that actively responds to a stimulus and
effects some change. In the immune system, effector cells are the relatively short-lived
activated cells which function in defending the body in an immune response. Effector B
cells (plasma cells) function in secreting antibodies. Activated T cells carry out
cell-mediated responses. The muscles are generally divided into two groups which are
somatic effectors and autonomic effectors. Somatic effectors are the body's striated
muscles (such as those found in the arm and back), and autonomic effectors are
smooth muscles (such as the iris of the eye).
Afferent neurons are sensory neurons that carry nerve impulses from sensory stimuli
towards the central nervous system and brain. Afferents neurons (axons or nerve fibers)
in the peripheral nervous system that transduce information about mechanical, thermal,
and chemical states of the body. They are unipolar, bipolar, or multipolar shaped cells.
Efferent neurons ,also called motor neurons, are the nerves responsible for carrying
signals away from the central nervous system in order to initiate an action. When
sensory input is brought to the brain, it sends signals for a motor response to your
muscles and glands via the efferent neurons. These neurons are multipolar neurons,
with cell bodies located in the gray matter of the spinal cord.
Afferent and efferent neurons have to work together in order to sense and respond to
stimulus, but they don't directly connect.
Task 2
2a) This is a motor (multipolar) neuron
The nervous system
Task 1
Effectors are parts of the body ,such as muscles and glands, which produce a response
to a detected stimulus. For example a muscle that contracts in order to move an arm.
An effector cell is any of various types of cell that actively responds to a stimulus and
effects some change. In the immune system, effector cells are the relatively short-lived
activated cells which function in defending the body in an immune response. Effector B
cells (plasma cells) function in secreting antibodies. Activated T cells carry out
cell-mediated responses. The muscles are generally divided into two groups which are
somatic effectors and autonomic effectors. Somatic effectors are the body's striated
muscles (such as those found in the arm and back), and autonomic effectors are
smooth muscles (such as the iris of the eye).
Afferent neurons are sensory neurons that carry nerve impulses from sensory stimuli
towards the central nervous system and brain. Afferents neurons (axons or nerve fibers)
in the peripheral nervous system that transduce information about mechanical, thermal,
and chemical states of the body. They are unipolar, bipolar, or multipolar shaped cells.
Efferent neurons ,also called motor neurons, are the nerves responsible for carrying
signals away from the central nervous system in order to initiate an action. When
sensory input is brought to the brain, it sends signals for a motor response to your
muscles and glands via the efferent neurons. These neurons are multipolar neurons,
with cell bodies located in the gray matter of the spinal cord.
Afferent and efferent neurons have to work together in order to sense and respond to
stimulus, but they don't directly connect.
Task 2
2a) This is a motor (multipolar) neuron
