FMLY 1010 Lecture Notes - Lecture 69: Thymus, Sedentary Lifestyle, Ovulation

• School: University of Manitoba
• Department: Family Social Sciences
• Course: FMLY 1010
• Professor: Christine A.Schippers

Document Summary

Lomoarcpsd|98729 8: general loss of speed and strength with age. Strength peaks in 20s and 30s then declined steadily. Fertility peaks in late teens, early twenties then declines. Me(cid:374)"s reprodu(cid:272)ti(cid:448)e a(cid:271)ility does de(cid:272)li(cid:374)e (cid:271)ut slo(cid:449)er tha(cid:374) (cid:449)o(cid:373)e(cid:374)"s. Able to father children throughout their life, but increases likelihood of passing on genetic mutations, disorders, cancers, etc. Ovulation may become sporadic so women turn to specialists for help. Two key organs: thymus gland and bone marrow - produce. B cells: fight against external threats by producing antibodies. T cells: defend against internal threats decline with age, lose ability to recognize foreign cell increase susceptibility to disease. Largest in adolescence then decreases in size and mass. Less able to turn t-cells into adult cells, not capable of maintaining optimum immune system functioning. Shown in healthy adults but also linked to stress, depression. Experiences that demand lots of stress and change will affect it.