Unit 3 Exam

A  True

B  False

A  False

B  True

A  False

B  True

A  True

B  False

A  False

B  True

A  involves shedding of the endometrium

B  is stimulated by HCG

C  is triggered by an LH surge

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

E  occurs after ovulation but prior to degeneration of the follicle

A  stimulating FSH and LH production.

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

C  inhibiting FSH and LH production.

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

E  destroying the endometrium.

A  the beating of cilia in the oviduct

B  rhythmic contractions of the uterus

C  the beating of the egg’s flagella

D  rhythmic contractions of the oviduct

E  the beating of the egg’s cilia

A  in the lower part of the oviduct

B  in the uterus

C  in the vagina

D  in the ovary

E  in the upper part of the oviduct

A  macrophages

B  basophils

C  cytotoxic T cells

D  B cells

E  helper T cells

A  antigen

B  histamine

C  complement

D  interferon

E  antibody

A  new flu strains are regularly evolving

B  the immune system “forgets” the vaccine

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

D  we need to replace the vaccine used up last year

E  not everybody got a flu shot last year

A  cell-mediated

B  passive

C  active

D  nonspecific

E  humoral

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

B  None of the choices is correct.

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

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

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

C  The left ventricle contains the pacemaker.

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

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

A  SA node

B  AV node

C  specialized muscle fibers

D  bundle of His

E  Purkinje fibers

A  an artery

B  the aorta

C  a venule

D  an arteriole

E  either an artery or an arteriole

A  fighting infections

B  carrying oxygen

C  blood clotting

D  carrying carbon dioxide

E  hemoglobin transport

A  red meats

B  products that are high in cholesterol

C  products containing trans fats

D  tobacco products

E  fruits and vegetables

A  capillaries

B  arteries

C  arterioles

D  venules

E  veins

A  pulmonary veins

B  left ventricle

C  pulmonary arteries

D  aorta

E  left atrium

A  anemia

B  blockage of a coronary artery

C  ventricular defibrillation

D  hypertension

E  heart murmur

A  a positive feedback mechanism.

B  a combination of negative and positive feedback.

C  response to external stimuli.

D  lack of control over homeostasis.

E  a negative feedback mechanism.

A  constriction of blood vessels in the skin

B  retention of water

C  increased blood flow to the skin

D  contraction of muscles

E  slowing of the heart rate

A  only comes into play when you are ill

B  is the maintenance of a constant internal state

C  is the way the internal environment influences the external environment

D  is a pathological condition

E  is the maintenance of a relatively stable internal environment

A  a positive feedback mechanism

B  a negative feedback mechanism

C  a hormone produced in the kidney itself

D  a hormone ultimately controlled by the brain

E  nerve impulses from the brain