FIRST PERIODICAL TEST IN SCIENCE VI

 Name: ________________________________ Gr. & Sec. ____________ Date: ___________ Score:

 ________ I. Choose the letter of the correct answer.

1. What is the transport system of the body

a. Di!esti"e System b. Circ#latory System c. Ner"o#s System d. S$eletalSystem

%. Why does the heart ha"e to p#mp blood

a. to pro"ide the necessary force for the blood to mo"e from the lower to #pper part of the body b. to collect all the waste materials from the body cells

c. to echan!e the necessary n#trients

d. both a and b'. Which part of the circ#latory system carries the n#trients and remo"es wastes from the body cells

a. arteries b. blood c. capillaries d. heart

(. What force p#lls the blood to the lower part of the body

a. adhesion b. diff#sion c. !ra"ity d. ma!netism). Which of the followin! is the f#nction of the circ#latory system

a. to distrib#te body cells

 b. to protect the body from heat and forei!n bodiesc. to distrib#te oy!en and n#trients to the body cells and collect their wastes

d. to repair body cells

*. +ow will yo# describe the hearta. It is an infleible or!an. c. It wor$s li$e a p#mp.

 b. It is a hollow m#sc#lar or!an. d. both b and c

,. What will happen to the heart if it was made of bony tiss#es

a. It will easily brea$ c. It will not be able to s-#eee blood b. It will p#mp more blood d. It will not mo"e

/. Why is the heart important

a. It chec$s the flow of blood c. It ma$es the blood mo"e thro#!ho#t the body b. It stops the flow of blood d. It occ#pies the chest ca"ity

0. It is $now as the ri"er of life2.

a. sali"a b. sweat c. blood d. #rine13. Why is blood important to the body

a. It !i"es color to o#r s$in

 b. It carries oy!en and n#trients to the different cells of the bodyc. It carries away carbon dioide and other waste from the body

d. b and c

11. 4he blood cell that carries oy!en to the cells are $nown as ____________.

a. red blood cells b. white blood cells c. platelets d. plasma1%. When !erms enter the body thro#!h a c#t in the s$in5 how does the body react

a. the white blood cells en!#lf or $ill these !erms

 b. the red blood cells ma$e the !erms decrease in n#mber c. the platelets tend to clot and en!#lf the !erms

d. the plasma thic$ens and s#rro#nds the !erms

1'. Why are the platelets important to the bodya. they carry oy!en to all parts of the body c. they ma$e the blood clot to stop contin#o#s

 bleedin!

 b. they !i"e the blood its red color d. they s#rro#nd the !erms and wea$en them

 

1(. Why are "eins important in blood circ#lation

a. they carry blood with oy!en away to the heart c. 4hey ma$e the blood clot

 b. they carry blood with carbon dioide towards the heart d. they ma$e the blood redder.

1). Why sho#ld arteries be to#!ha. to carry fresh blood to all body parts c. to enable blood echan!e n#trients.

 b. to withstand the press#re of blood d#e to the p#mpin! of the heart. d. to carry waste

materials to the l#n!s1*. Why are the capillaries "ery small in sie

a. they are the blood "essels that reach o#t to the cells. c. they carry oy!enated blood to the

heart b. they carry blood to the brain d. they carry #noy!enated blood to

the l#n!s.

1,. Which blood "essel will allow a forcef#l flow of blooda. artery c. capillaries

 b. "eins d. "en#les

1/. If yo# !et sic$5 yo# are li$ely to de"elop __________.

a. lymph fl#ids c. lymph "essels b. lymph nodes d. blood platelets

10. +ow do white blood cells defend the body a!ainst harmf#l bacteria

a. by en!#lfin!6$illin! the harmf#l bacteria c. by pre"entin! its entrance to the body b. by decreasin! in n#mber d#rin! an infection d. by eplodin! them

%3. 4he presence of enlar!e lymph node indicates _________.

a. an infection c. yo# are in !ood shape b. a reco"ery from an infection d. yo# are "ery sic$.

%1. Where are lymph nodes located

a. adenoid c. nec$5 armpit5 elbow and !roins

 b. tonsils d. nails%%. What is N74 tr#e in the importance of the lymphatic system

a. it strains !erms and microor!anisms.

 b. it traps all the !erms and d#st that enter the bodyc. it ret#rns the fl#id and protein from tiss#e spaces to the circ#latory system

d. it is part of the ner"o#s system.

%'. What will happen if a person in8#res part of his6her braina. action will contin#e to be coordinated

 b. the brain decays

c. the person will died. the person cannot inte!rate and coordinate his6her mo"ements.

%(. Why is the brain enclosed in the s$#ll

a. for protection

 b. for so#nd proofin!c. for desi!n

d. for a better loo$ 

%). 4his is the lar!est part of the brain and it controls mental processes s#ch as thin$in!5 memoriin!and decision9ma$in!.

a. spinal cord c. cerebell#m

 b. cerebr#m d. med#la oblon!ata%*. 4his is the small part of the brain which coordinates "ol#ntary m#sc#lar actions and maintains

 balance in the body.

a. cerebr#m c. med#la oblon!ata

 

 b. cerebell#m d. spinal cord

%,. 4he spinal cord is protected by the spinal col#mn beca#se it is ___________.

a. colored c. hard

 b. delicate d. to be $ept warm