Unit 3 Exam

A  False

B  True

A  True

B  False

A  True

B  False

A  True

B  False

A  True

B  False

A  involves shedding of the endometrium

B  is triggered by an LH surge

C  is stimulated by HCG

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  inhibiting FSH and LH production.

B  destroying the endometrium.

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

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

E  stimulating FSH and LH production.

A  the beating of the egg’s cilia

B  the beating of cilia in the oviduct

C  rhythmic contractions of the uterus

D  the beating of the egg’s flagella

E  rhythmic contractions of the oviduct

A  in the uterus

B  in the lower part of the oviduct

C  in the vagina

D  in the ovary

E  in the upper part of the oviduct

A  B cells

B  basophils

C  cytotoxic T cells

D  helper T cells

E  macrophages

A  complement

B  interferon

C  antigen

D  antibody

E  histamine

A  new flu strains are regularly evolving

B  not everybody got a flu shot last year

C  we need to replace the vaccine used up last year

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

E  the immune system “forgets” the vaccine

A  nonspecific

B  passive

C  cell-mediated

D  humoral

E  active

A  None of the choices is correct.

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

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

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

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

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 pulmonary circuit.

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

A  SA node

B  Purkinje fibers

C  bundle of His

D  specialized muscle fibers

E  AV node

A  an arteriole

B  a venule

C  either an artery or an arteriole

D  an artery

E  the aorta

A  blood clotting

B  fighting infections

C  hemoglobin transport

D  carrying carbon dioxide

E  carrying oxygen

A  fruits and vegetables

B  tobacco products

C  products containing trans fats

D  products that are high in cholesterol

E  red meats

A  capillaries

B  arterioles

C  arteries

D  venules

E  veins

A  left atrium

B  aorta

C  pulmonary arteries

D  pulmonary veins

E  left ventricle

A  anemia

B  blockage of a coronary artery

C  ventricular defibrillation

D  hypertension

E  heart murmur

A  a combination of negative and positive feedback.

B  response to external stimuli.

C  a positive feedback mechanism.

D  a negative feedback mechanism.

E  lack of control over homeostasis.

A  increased blood flow to the skin

B  retention of water

C  slowing of the heart rate

D  constriction of blood vessels in the skin

E  contraction of muscles

A  is the way the internal environment influences the external environment

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 maintenance of a constant internal state

A  nerve impulses from the brain

B  a hormone ultimately controlled by the brain

C  a hormone produced in the kidney itself

D  a positive feedback mechanism

E  a negative feedback mechanism