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 triggered by an increase in the levels of estrogen and progesterone

B  occurs after ovulation but prior to degeneration of the follicle

C  involves shedding of the endometrium

D  is triggered by an LH surge

E  is stimulated by HCG

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

B  inhibiting FSH and LH production.

C  stimulating FSH and LH production.

D  destroying the endometrium.

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

A  the beating of the egg’s flagella

B  rhythmic contractions of the uterus

C  the beating of the egg’s cilia

D  rhythmic contractions of the oviduct

E  the beating of cilia in the oviduct

A  in the upper part of the oviduct

B  in the ovary

C  in the uterus

D  in the vagina

E  in the lower part of the oviduct

A  macrophages

B  basophils

C  helper T cells

D  cytotoxic T cells

E  B cells

A  antigen

B  interferon

C  antibody

D  histamine

E  complement

A  new flu strains are regularly evolving

B  we need to replace the vaccine used up last year

C  the immune system “forgets” the vaccine

D  not everybody got a flu shot last year

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

A  passive

B  cell-mediated

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 inflammatory and immune responses result in extra heat production.

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

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

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  specialized muscle fibers

C  bundle of His

D  Purkinje fibers

E  SA node

A  the aorta

B  an arteriole

C  either an artery or an arteriole

D  a venule

E  an artery

A  blood clotting

B  hemoglobin transport

C  carrying oxygen

D  fighting infections

E  carrying carbon dioxide

A  fruits and vegetables

B  products containing trans fats

C  red meats

D  tobacco products

E  products that are high in cholesterol

A  venules

B  capillaries

C  veins

D  arteries

E  arterioles

A  pulmonary arteries

B  aorta

C  left ventricle

D  pulmonary veins

E  left atrium

A  ventricular defibrillation

B  blockage of a coronary artery

C  heart murmur

D  anemia

E  hypertension

A  a combination of negative and positive feedback.

B  lack of control over homeostasis.

C  response to external stimuli.

D  a negative feedback mechanism.

E  a positive feedback mechanism.

A  slowing of the heart rate

B  contraction of muscles

C  retention of water

D  increased blood flow to the skin

E  constriction of blood vessels in the skin

A  is a pathological condition

B  is the way the internal environment influences the external environment

C  is the maintenance of a constant internal state

D  only comes into play when you are ill

E  is the maintenance of a relatively stable internal environment

A  a hormone ultimately controlled by the brain

B  a negative feedback mechanism

C  nerve impulses from the brain

D  a hormone produced in the kidney itself

E  a positive feedback mechanism