Answer:
The correct answer is D.
Explanation:
Papillary muscles, attached via chordae tendineae, help to close the valves and prevent regurgitation.
Pectinate muscles are parallel ridges in the walls of the atrium of the heart, mainly in right atrium. They can stretch during adverse loading conditions, to <em>help the right atrium to dilate without much wall stres</em>s.
Answer:
Breathing is primary C02. So True
Explanation:
Run a group of nursing homes
emove flag
Answer:
Cause of male infertility are:
- Abnormal sperm production or improper functioning because of undescended testicles
- Genetic conditions like Klinefelter syndrome
- Health problems such as diabetes or infections such as chlamydia, gonorrhea, mumps & HIV
- Enlargement of testes veins also result in low sperm count
Low sperm count symptoms are:
- Problem with sex activity - low sex drive or difficulty in maintaining the erection eg.Erectile dysfunction
- Pain or lump in the testicle area
- Decreased facial or body hair or other symptoms of chromosomal or hormonal disorders
<u>Klinefelter syndrome :</u>
It is a genetic problem in which a male is born with supplemental copy of X chromosome. It usually occurs as a consequence of genetic purposeless error after the conception.
Signs & symptoms include:
- Taller than average stature
- Absent, delayed or incomplete puberty
- Small & firm testicles
- Small penis
- Enlarge breasts ( gynecomastia)
- Long legs, short torso & broader hips in comparison with other teens
Treatment of low sperm count include:
- Surgery: A varicocele can be corrected surgically or vas deferens can be repaired
- Treatment for sexual intercourse problems
- Hormone therapy & medications
- Assisted reproductive technology
- Treating infections
