One __________________ is the amount of force required to accelerate 1 kg of mass at 1 m/s 2 . ________________________________________
Fill in the blank(s) with the appropriate word(s).
Newton
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In these views of the larynx, what structure does number 3 indicate?
A. Tracheal cartilage B. Epiglottis C. Corniculate cartilage D. Thyroid cartilage E. Cricoid cartilage
The chorion ________ and the amnion ________.
A. projects into the endometrium and helps form the placenta; is a membrane that encircles a developing embryo B. is the site from which primary germ layers develop; is the site from which secondary germ layers develop C. is the part of the blastocyst that is not the inner cell mass; is the inner cell mass D. is the outer protective membrane around the embryo; is the site where an embryo is implanted into the uterus
Regarding endocrine processes in cardiovascular regulation, long-term adjustments
A) involve sympathetic responses that adjust cardiac output and peripheral resistance to stabilize blood pressure and blood flow to tissues. B) involve alterations in blood volume that affect cardiac output and the transport of oxygen and carbon dioxide to and from active tissues. C) cause immediate, localized homeostatic adjustments. D) drastically alter blood pressure and blood flow to vital organs. E) involve the release of epinephrine and norepinephrine from the adrenal medullae, which stimulate cardiac output and peripheral vasoconstriction.
Which is a TRUE statement about smooth muscle?
A. Smooth muscle is striated. B. Smooth muscle does not have thick and thin filaments. C. Smooth muscle does not use troponin-tropomyosin to regulate cross-bridge activity. D. Changes in cytosolic calcium do not regulate cross-bridge activity in smooth muscle. E. The myosin in smooth muscle requires phosphorylation before it can bind to ATP.