Unit 3 Exam

A  False

B  True

A  False

B  True

A  False

B  True

A  False

B  True

A  True

B  False

A  is stimulated by HCG

B  occurs after ovulation but prior to degeneration of the follicle

C  is triggered by an LH surge

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

E  involves shedding of the endometrium

A  stimulating FSH and LH production.

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

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

D  inhibiting FSH and LH production.

E  destroying the endometrium.

A  rhythmic contractions of the oviduct

B  rhythmic contractions of the uterus

C  the beating of the egg’s flagella

D  the beating of cilia in the oviduct

E  the beating of the egg’s cilia

A  in the upper part of the oviduct

B  in the ovary

C  in the vagina

D  in the uterus

E  in the lower part of the oviduct

A  B cells

B  helper T cells

C  macrophages

D  cytotoxic T cells

E  basophils

A  histamine

B  antigen

C  interferon

D  antibody

E  complement

A  not everybody got a flu shot last year

B  we need to replace the vaccine used up last year

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

D  the immune system “forgets” the vaccine

E  new flu strains are regularly evolving

A  cell-mediated

B  active

C  humoral

D  passive

E  nonspecific

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

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

C  None of the choices is correct.

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

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

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

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  The left ventricle contains the pacemaker.

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

A  AV node

B  SA node

C  Purkinje fibers

D  bundle of His

E  specialized muscle fibers

A  an arteriole

B  a venule

C  either an artery or an arteriole

D  the aorta

E  an artery

A  fighting infections

B  blood clotting

C  carrying carbon dioxide

D  carrying oxygen

E  hemoglobin transport

A  fruits and vegetables

B  products that are high in cholesterol

C  products containing trans fats

D  tobacco products

E  red meats

A  arterioles

B  arteries

C  capillaries

D  venules

E  veins

A  left atrium

B  aorta

C  pulmonary arteries

D  left ventricle

E  pulmonary veins

A  hypertension

B  blockage of a coronary artery

C  anemia

D  heart murmur

E  ventricular defibrillation

A  a negative feedback mechanism.

B  response to external stimuli.

C  a positive feedback mechanism.

D  a combination of negative and positive feedback.

E  lack of control over homeostasis.

A  slowing of the heart rate

B  increased blood flow to the skin

C  retention of water

D  constriction of blood vessels in the skin

E  contraction of muscles

A  is the way the internal environment influences the external environment

B  only comes into play when you are ill

C  is the maintenance of a relatively stable internal environment

D  is a pathological condition

E  is the maintenance of a constant internal state

A  a hormone ultimately controlled by the brain

B  a hormone produced in the kidney itself

C  a negative feedback mechanism

D  a positive feedback mechanism

E  nerve impulses from the brain