A girl has her eyes shut and is standing inside a brightly lit room. What happens to her pupils when she opens her eyes? Why?
Responses
Her pupils grow because the muscles relax.
Her pupils grow because the muscles relax.
Her pupils shrink because the muscles relax.
Her pupils shrink because the muscles relax.
Her pupils shrink because the muscles contract.
Her pupils shrink because the muscles contract.
Her pupils grow because the muscles contract.
Her pupils shrink because the muscles contract.
The human body has four types of tissues. What part of the eye uses muscle tissue for opening and closing movements?
Responses
Sclera
Sclera
Cornea
Cornea
Iris
Iris
Retina
Iris
How do signals from sensory neurons reach motor neurons?
Responses
Signals move from dendrite to dendrite towards motor neurons.
Signals move from dendrite to dendrite towards motor neurons.
Through interneurons in the brain and spinal cord that connect sensory neurons and motor neurons.
Through interneurons in the brain and spinal cord that connect sensory neurons and motor neurons.
Signals from sensory neurons do not get sent to motor neurons.
Signals from sensory neurons do not get sent to motor neurons.
Motor neurons signal for the body to move the signal toward them.
Through interneurons in the brain and spinal cord that connect sensory neurons and motor neurons.
What is systemic circulation?
Responses
the path of blood as it moves from the head throughout the body and back to the head
the path of blood as it moves from the head throughout the body and back to the head
the path of blood between pharynx and trachea
the path of blood between pharynx and trachea
the path of blood between the heart and lungs
the path of blood between the heart and lungs
the path of blood as it moves from the heart throughout the body and back to the heart
the path of blood as it moves from the heart throughout the body and back to the heart