Unit 3 Exam

A  True

B  False

A  True

B  False

A  False

B  True

A  True

B  False

A  False

B  True

A  is triggered by an increase in the levels of estrogen and progesterone

B  involves shedding of the endometrium

C  is stimulated by HCG

D  is triggered by an LH surge

E  occurs after ovulation but prior to degeneration of the follicle

A  immunizing the woman against human chorionic gonadotropin (hCG).

B  inhibiting FSH and LH production.

C  making the woman’s reproductive tract toxic to sperm.

D  stimulating FSH and LH production.

E  destroying the endometrium.

A  rhythmic contractions of the oviduct

B  the beating of cilia in the oviduct

C  the beating of the egg’s cilia

D  the beating of the egg’s flagella

E  rhythmic contractions of the uterus

A  in the uterus

B  in the lower part of the oviduct

C  in the ovary

D  in the upper part of the oviduct

E  in the vagina

A  basophils

B  cytotoxic T cells

C  B cells

D  macrophages

E  helper T cells

A  histamine

B  antigen

C  complement

D  antibody

E  interferon

A  not everybody got a flu shot last year

B  new flu strains are regularly evolving

C  once you have had the flu, you need another vaccination

D  the immune system “forgets” the vaccine

E  we need to replace the vaccine used up last year

A  cell-mediated

B  passive

C  humoral

D  nonspecific

E  active

A  None of the choices is correct.

B  The microorganisms trick the brain’s temperature control center into creating a hot environment that favors their growth.

C  The rapid multiplication of the invading microorganisms results in extra heat production.

D  The brain’s temperature control center responds to inflammation by creating a hot environment unfavorable to microorganisms.

E  The inflammatory and immune responses result in extra heat production.

A  The left ventricle contains the pacemaker.

B  A more muscular wall is required to supply the pumping that powers the flow of blood into the pulmonary circuit.

C  The left ventricle is responsible for systole, while the right ventricle is responsible for diastole.

D  A more muscular wall is required to supply the pumping that powers the flow of blood into the systemic circuit.

E  The position of the heart in the chest cavity allows for the left ventricle to develop a thicker wall than the right ventricle.

A  AV node

B  SA node

C  specialized muscle fibers

D  bundle of His

E  Purkinje fibers

A  an artery

B  an arteriole

C  either an artery or an arteriole

D  a venule

E  the aorta

A  fighting infections

B  blood clotting

C  carrying carbon dioxide

D  hemoglobin transport

E  carrying oxygen

A  products that are high in cholesterol

B  tobacco products

C  fruits and vegetables

D  products containing trans fats

E  red meats

A  venules

B  capillaries

C  arterioles

D  arteries

E  veins

A  left ventricle

B  left atrium

C  pulmonary arteries

D  aorta

E  pulmonary veins

A  anemia

B  ventricular defibrillation

C  heart murmur

D  hypertension

E  blockage of a coronary artery

A  response to external stimuli.

B  a combination of negative and positive feedback.

C  lack of control over homeostasis.

D  a positive feedback mechanism.

E  a negative feedback mechanism.

A  retention of water

B  contraction of muscles

C  increased blood flow to the skin

D  slowing of the heart rate

E  constriction of blood vessels in the skin

A  is the maintenance of a constant internal state

B  is the maintenance of a relatively stable internal environment

C  only comes into play when you are ill

D  is a pathological condition

E  is the way the internal environment influences the external environment

A  a hormone ultimately controlled by the brain

B  a hormone produced in the kidney itself

C  nerve impulses from the brain

D  a positive feedback mechanism

E  a negative feedback mechanism