BJU Science 7 Chapter 16

Which of the following is part of the body's nonspecific defenses?

• an antibody

• a B cell

• a fever

• a lymphocyte

Which of the following is NOT an inflammatory response?

• tender, warm, and red skin surrounding a simple scrape

• irritated, red, and swollen gums resulting from gingivitus

• antibodies and memory cells attacking whooping cough bacteria in the body

• extra plasma and white blood cells being brought to the site of a lung infection

Macrophages know which substances are foreign and need to be attacked by the _________ on the substances' cell membranes.

• antibodies

• antigens

• B cells

• T cells

Antibodies are produces by ________.

• antigens

• B cells

• T cells

• macrophages

A vaccine produces ________ immunity.

• active

• memory

• passive

• resistance

Signals from your brain or spinal cord to muscles and other parts of your body are carried by _________.

• cerebral neurons

• interneurons

• motor neurons

• sensory neurons

What is the small gap between the axon and dendrite of two nearby neurons?

• a cell body

• impulse

• interneurons

• synapse

Which is the correct pathway of a reflex arch?

• motor neuron, interneuron, sensory neuron, response

• motor neuron, interneurons, brain, response

• sensory neuron, response, interneuron, motor neuron

• sensory neuron, interneurons, motor neuron, response

Which structure of the eye bends light and focuses an upside-down image?

• cornea

• lens

• iris

• reina

An infection in your semicircular canals would most likely affect your ________.

• hearing

• sight

• balance

• taste