Someone please help me with Biology! 10pts for best answer!?

[Chau D]

I seriously need help!

Okay I have a few questions that I'm unsure of so if you could give me a hand it would be greatly appreciated!

1. The rib chage is formed by curved ribs extending from the backbone and joining together in the front of the bone called the sternum?

2. The bone that is dense and almost solid that provides a great deal of support is the Porous bone?

3. Flexors are muscles that causes limbs to bend towards each other at a joint?

4. Bones require at least two joints to move?

5. Repeating units of actin and myosin filaments are called sarcomere?

6. Acne is caused by ovoeractive oil glands and hormones?

7.Pepsin and hydrochloric acid in the stomach begin the digestion of proteins?

8. Where are indigestible materials (fibers) briefly stored and compacted in?

9. What cells release defense proteins in the blood?

10. The branch of science that deals with antigens, antibodoies and immunity is what?
11. The lower opening of the utuerus is called the cervix?

12. The part of the female reproductive system that's losot each month as menstrual flow is the lining of the what?

13. The entry of an embryo into the uterine wall is called the what?

[mr.answerman]

1. true
2. Not true the densest bone is compact or cortical bone
3. True the bones come closer together and the joint angle decreases
4.not true
5. True, the z line to z line or sarcomere is the functional unit of contraction
6.True
7. true
8. the colon
9. plasma cells turn into antibodies, these are the defensive protective proteins.
10. immunology.(sp)
11. The cervix is the neck of the uterus, the cervical OS or mouth of the uterus is the opening. There is both an internal and external OS.
12. The functional layer of the endometrium
13. Implantation. In humans this occurs at day 6

[Kate]

1) yes but not all ribs are connected to the sternum, the lower 2 sets are not.
2)porous bone is weak bone that is decreasing in density, so no.
3)yes
4)no...you can move your foot just from using your ankle joint...only 1 joint is needed
5)yes
6)yes
7)yes
8)stomach
9)macrophages
10)epidemiology

[Lotan B]

1. yes
5. yes

sorry about the rest, not sure

[jyothi r]

1. yes
2. no, it is compact bone
3. yes
5. yes
6. yes
7. yes
9. plasma cells
10. immunology
11. yes
12. endometriual lining of uterus
13. implantation

[Forever young]

Are you Drunk?
Ask me a question about Charlie Brown.

[awesome girl]

1. yes
2. no, it's called "spongy" bone, and i don't think that's true.
3. (not sure)
4. well, your thumb has only one joint in it. Maybe it's two muscles, the main muscle and auxillary muscle (bicep and tricep)
5. (not sure)
6. yes, causing excess sebum to form in the sebaceous clands
7. (not sure)
8. (not sure)
9. (not sure)
10. toxicology?
11. yes
12. uterus
13. implantation

[hanizee]

1. yes
2. no, it's called "spongy" bone. the porous bone is brittle.
3. yes. flexor muscles are mostly found in grasshoppers.
4. well, your thumb has only one joint in it. Maybe it's two muscles, the main muscle and auxillary muscle (bicep and tricep)
5. yes
6. yes, causing excess sebum to form in the sebaceous clands
7. yes
8. large intestine
9. white blood cells (leucocytes)
10. immunology
11. yes
12. uterus
13. implantation

[michelle]

1. Yes
2. EDIT: Definitely not.
3. Yes.
4. No. Look at your fingertips.
5. Yes.
6. Probably yes.
7. Yes.
8. Intestines (90% sure--there may be something before this)
9. White blood cells (luekocytes)
10. Immunology (may also be medicine or physiology)
11. Yes
12. Uterus
13. Implantation ( I believe)